42892639 has 2 divisors, whose sum is σ = 42892640. Its totient is φ = 42892638.

The previous prime is 42892627. The next prime is 42892643. The reversal of 42892639 is 93629824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42892639 - 2²³ = 34504031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42892595 and 42892604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42892609) by changing a digit.

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 as a sum of consecutive naturals, namely, 21446319 + 21446320.

It is an arithmetic number, because the mean of its divisors is an integer number (21446320).

Almost surely, 2^42892639 is an apocalyptic number.

42892639 is a deficient number, since it is larger than the sum of its proper divisors (1).

42892639 is an equidigital number, since it uses as much as digits as its factorization.

42892639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 43.

The square root of 42892639 is about 6549.2472086493. The cubic root of 42892639 is about 350.0479906983.

The spelling of 42892639 in words is "forty-two million, eight hundred ninety-two thousand, six hundred thirty-nine".