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142502880 = 25351341557
BaseRepresentation
bin10000111111001…
…10101111100000
3100221010220012110
420133212233200
5242440043010
622050155320
73350153202
oct1037465740
9327126173
10142502880
1173491583
123b882b40
13236a5640
1414cd6772
15c79d120
hex87e6be0

142502880 has 192 divisors, whose sum is σ = 496093248. Its totient is φ = 34160640.

The previous prime is 142502813. The next prime is 142502887. The reversal of 142502880 is 88205241.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142502887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 255562 + ... + 256118.

It is an arithmetic number, because the mean of its divisors is an integer number (2583819).

Almost surely, 2142502880 is an apocalyptic number.

142502880 is a gapful number since it is divisible by the number (10) 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 142502880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248046624).

142502880 is an abundant number, since it is smaller than the sum of its proper divisors (353590368).

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

142502880 is a wasteful number, since it uses less digits than its factorization.

142502880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629 (or 621 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 142502880 is about 11937.4570156294. The cubic root of 142502880 is about 522.3254821880.

The spelling of 142502880 in words is "one hundred forty-two million, five hundred two thousand, eight hundred eighty".