142238577920 has 36 divisors (see below), whose sum is σ = 340705846740. Its totient is φ = 56895430656.

The previous prime is 142238577889. The next prime is 142238577947. The reversal of 142238577920 is 29775832241.

It can be written as a sum of positive squares in 2 ways, for example, as 23583130624 + 118655447296 = 153568^2 + 344464^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55560665 + ... + 55563224.

Almost surely, 2^142238577920 is an apocalyptic number.

142238577920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142238577920 is an abundant number, since it is smaller than the sum of its proper divisors (198467268820).

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

142238577920 is an equidigital number, since it uses as much as digits as its factorization.

142238577920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111123910 (or 111123896 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 50.

The spelling of 142238577920 in words is "one hundred forty-two billion, two hundred thirty-eight million, five hundred seventy-seven thousand, nine hundred twenty".