142256520 has 256 divisors, whose sum is σ = 560332800. Its totient is φ = 31415040.

The previous prime is 142256507. The next prime is 142256533. The reversal of 142256520 is 25652241.

142256520 is a `hidden beast` number, since 1 + 4 + 2 + 2 + 5 + 652 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (142256507) and next prime (142256533).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 234057 + ... + 234663.

It is an arithmetic number, because the mean of its divisors is an integer number (2188800).

Almost surely, 2^142256520 is an apocalyptic number.

142256520 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 142256520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280166400).

142256520 is an abundant number, since it is smaller than the sum of its proper divisors (418076280).

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

142256520 is a wasteful number, since it uses less digits than its factorization.

142256520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665 (or 655 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 142256520 is about 11927.1337713635. The cubic root of 142256520 is about 522.0243085522.

The spelling of 142256520 in words is "one hundred forty-two million, two hundred fifty-six thousand, five hundred twenty".