142604431 has 2 divisors, whose sum is σ = 142604432. Its totient is φ = 142604430.

The previous prime is 142604411. The next prime is 142604447. The reversal of 142604431 is 134406241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142604431 - 2²⁵ = 109049999 is a prime.

It is a super-2 number, since 2×142604431² = 40672047481667522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142604396 and 142604405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142604411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71302215 + 71302216.

It is an arithmetic number, because the mean of its divisors is an integer number (71302216).

Almost surely, 2^142604431 is an apocalyptic number.

142604431 is a deficient number, since it is larger than the sum of its proper divisors (1).

142604431 is an equidigital number, since it uses as much as digits as its factorization.

142604431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 142604431 is about 11941.7097184616. The cubic root of 142604431 is about 522.4495266523.

The spelling of 142604431 in words is "one hundred forty-two million, six hundred four thousand, four hundred thirty-one".