142555031 has 2 divisors, whose sum is σ = 142555032. Its totient is φ = 142555030.

The previous prime is 142555027. The next prime is 142555051. The reversal of 142555031 is 130555241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142555031 - 2² = 142555027 is a prime.

It is a super-2 number, since 2×142555031² = 40643873726821922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142555051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71277515 + 71277516.

It is an arithmetic number, because the mean of its divisors is an integer number (71277516).

Almost surely, 2^142555031 is an apocalyptic number.

142555031 is a deficient number, since it is larger than the sum of its proper divisors (1).

142555031 is an equidigital number, since it uses as much as digits as its factorization.

142555031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 142555031 is about 11939.6411587618. The cubic root of 142555031 is about 522.3891919506.

The spelling of 142555031 in words is "one hundred forty-two million, five hundred fifty-five thousand, thirty-one".