142572978 has 24 divisors (see below), whose sum is σ = 309738000. Its totient is φ = 47396664.

The previous prime is 142572977. The next prime is 142573027. The reversal of 142572978 is 879275241.

It is a happy number.

142572978 is a `hidden beast` number, since 1 + 4 + 2 + 572 + 9 + 78 = 666.

It is not an unprimeable number, because it can be changed into a prime (142572977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3628 + ... + 17271.

It is an arithmetic number, because the mean of its divisors is an integer number (12905750).

Almost surely, 2^142572978 is an apocalyptic number.

142572978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

142572978 is an abundant number, since it is smaller than the sum of its proper divisors (167165022).

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

142572978 is a wasteful number, since it uses less digits than its factorization.

142572978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21286 (or 21283 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 142572978 is about 11940.3927071098. The cubic root of 142572978 is about 522.4111131352.

The spelling of 142572978 in words is "one hundred forty-two million, five hundred seventy-two thousand, nine hundred seventy-eight".