156840127 has 2 divisors, whose sum is σ = 156840128. Its totient is φ = 156840126.

The previous prime is 156840121. The next prime is 156840169. The reversal of 156840127 is 721048651.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 156840127 - 2³ = 156840119 is a prime.

It is a super-2 number, since 2×156840127² = 49197650874752258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 156840092 and 156840101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (156840121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78420063 + 78420064.

It is an arithmetic number, because the mean of its divisors is an integer number (78420064).

Almost surely, 2^156840127 is an apocalyptic number.

156840127 is a deficient number, since it is larger than the sum of its proper divisors (1).

156840127 is an equidigital number, since it uses as much as digits as its factorization.

156840127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 156840127 is about 12523.5828339976. The cubic root of 156840127 is about 539.2858953504.

Adding to 156840127 its reverse (721048651), we get a palindrome (877888778).

The spelling of 156840127 in words is "one hundred fifty-six million, eight hundred forty thousand, one hundred twenty-seven".