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142524690 = 23571127179
BaseRepresentation
bin10000111111011…
…00000100010010
3100221012000010020
420133230010102
5242441242230
622050444310
73350303610
oct1037540422
9327160106
10142524690
11734a6a00
123b893696
13236b2549
1414d006b0
15c7a4810
hex87ec112

142524690 has 192 divisors, whose sum is σ = 441262080. Its totient is φ = 28828800.

The previous prime is 142524677. The next prime is 142524691. The reversal of 142524690 is 96425241.

It is a super-2 number, since 2×1425246902 = 40626574519192200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142524691) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1804071 + ... + 1804149.

It is an arithmetic number, because the mean of its divisors is an integer number (2298240).

Almost surely, 2142524690 is an apocalyptic number.

142524690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 142524690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220631040).

142524690 is an abundant number, since it is smaller than the sum of its proper divisors (298737390).

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

142524690 is a wasteful number, since it uses less digits than its factorization.

142524690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 142524690 is about 11938.3704918217. The cubic root of 142524690 is about 522.3521280534.

The spelling of 142524690 in words is "one hundred forty-two million, five hundred twenty-four thousand, six hundred ninety".