142087720 has 32 divisors (see below), whose sum is σ = 320601600. Its totient is φ = 56674368.

The previous prime is 142087703. The next prime is 142087789. The reversal of 142087720 is 27780241.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9841 + ... + 19519.

It is an arithmetic number, because the mean of its divisors is an integer number (10018800).

Almost surely, 2^142087720 is an apocalyptic number.

142087720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142087720 is an abundant number, since it is smaller than the sum of its proper divisors (178513880).

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

142087720 is a wasteful number, since it uses less digits than its factorization.

142087720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10057 (or 10053 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 142087720 is about 11920.0553689989. The cubic root of 142087720 is about 521.8177507569.

The spelling of 142087720 in words is "one hundred forty-two million, eighty-seven thousand, seven hundred twenty".