142931520 has 224 divisors, whose sum is σ = 513527040. Its totient is φ = 37416960.

The previous prime is 142931519. The next prime is 142931521. The reversal of 142931520 is 25139241.

It is an interprime number because it is at equal distance from previous prime (142931519) and next prime (142931521).

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

It is not an unprimeable number, because it can be changed into a prime (142931521) 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, 613324 + ... + 613556.

Almost surely, 2^142931520 is an apocalyptic number.

142931520 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 142931520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256763520).

142931520 is an abundant number, since it is smaller than the sum of its proper divisors (370595520).

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

142931520 is a wasteful number, since it uses less digits than its factorization.

142931520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330 (or 314 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 142931520 is about 11955.3971075828. The cubic root of 142931520 is about 522.8486657358.

The spelling of 142931520 in words is "one hundred forty-two million, nine hundred thirty-one thousand, five hundred twenty".