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142470852 = 223291133623
BaseRepresentation
bin10000111110111…
…10111011000100
3100221002021021020
420133132323010
5242433031402
622045351140
73346660626
oct1037367304
9327067236
10142470852
117346a507
123b8684b0
1323693ba4
1414cc8c16
15c7938bc
hex87deec4

142470852 has 48 divisors (see below), whose sum is σ = 347034240. Its totient is φ = 45434368.

The previous prime is 142470851. The next prime is 142470869. The reversal of 142470852 is 258074241.

It is not an unprimeable number, because it can be changed into a prime (142470851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37513 + ... + 41135.

It is an arithmetic number, because the mean of its divisors is an integer number (7229880).

Almost surely, 2142470852 is an apocalyptic number.

142470852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142470852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173517120).

142470852 is an abundant number, since it is smaller than the sum of its proper divisors (204563388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142470852 is a wasteful number, since it uses less digits than its factorization.

142470852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3772 (or 3770 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 142470852 is about 11936.1154485033. The cubic root of 142470852 is about 522.2863477883.

The spelling of 142470852 in words is "one hundred forty-two million, four hundred seventy thousand, eight hundred fifty-two".

Divisors: 1 2 3 4 6 12 29 58 87 113 116 174 226 339 348 452 678 1356 3277 3623 6554 7246 9831 10869 13108 14492 19662 21738 39324 43476 105067 210134 315201 409399 420268 630402 818798 1228197 1260804 1637596 2456394 4912788 11872571 23745142 35617713 47490284 71235426 142470852