156135439 has 2 divisors, whose sum is σ = 156135440. Its totient is φ = 156135438.

The previous prime is 156135323. The next prime is 156135443. The reversal of 156135439 is 934531651.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 156135439 - 2⁷ = 156135311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 156135398 and 156135407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (156135479) by changing a digit.

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 as a sum of consecutive naturals, namely, 78067719 + 78067720.

It is an arithmetic number, because the mean of its divisors is an integer number (78067720).

Almost surely, 2^156135439 is an apocalyptic number.

156135439 is a deficient number, since it is larger than the sum of its proper divisors (1).

156135439 is an equidigital number, since it uses as much as digits as its factorization.

156135439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48600, while the sum is 37.

The square root of 156135439 is about 12495.4167197417. The cubic root of 156135439 is about 538.4770060879.

The spelling of 156135439 in words is "one hundred fifty-six million, one hundred thirty-five thousand, four hundred thirty-nine".