142555640 has 32 divisors (see below), whose sum is σ = 322380000. Its totient is φ = 56732544.

The previous prime is 142555631. The next prime is 142555667. The reversal of 142555640 is 46555241.

142555640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×142555640² = 40644220991619200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142555597 and 142555606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 995 + ... + 16914.

It is an arithmetic number, because the mean of its divisors is an integer number (10074375).

Almost surely, 2^142555640 is an apocalyptic number.

142555640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142555640 is an abundant number, since it is smaller than the sum of its proper divisors (179824360).

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

142555640 is a wasteful number, since it uses less digits than its factorization.

142555640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18119 (or 18115 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 142555640 is about 11939.6666620136. Note that the first 5 decimals coincide. The cubic root of 142555640 is about 522.3899358378.

The spelling of 142555640 in words is "one hundred forty-two million, five hundred fifty-five thousand, six hundred forty".