156420115 has 8 divisors (see below), whose sum is σ = 187787088. Its totient is φ = 125080800.

The previous prime is 156420107. The next prime is 156420139. The reversal of 156420115 is 511024651.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 156420115 - 2³ = 156420107 is a prime.

It is a super-2 number, since 2×156420115² = 48934504753226450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 156420115.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8769 + ... + 19741.

It is an arithmetic number, because the mean of its divisors is an integer number (23473386).

Almost surely, 2^156420115 is an apocalyptic number.

156420115 is a deficient number, since it is larger than the sum of its proper divisors (31366973).

156420115 is a wasteful number, since it uses less digits than its factorization.

156420115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13829.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 156420115 is about 12506.8027489043. The cubic root of 156420115 is about 538.8040691639.

Adding to 156420115 its reverse (511024651), we get a palindrome (667444766).

The spelling of 156420115 in words is "one hundred fifty-six million, four hundred twenty thousand, one hundred fifteen".