156064121 has 4 divisors (see below), whose sum is σ = 156499200. Its totient is φ = 155629044.

The previous prime is 156064093. The next prime is 156064127. The reversal of 156064121 is 121460651.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121460651 = 13 ⋅9343127.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-156064121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156064127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217001 + ... + 217718.

It is an arithmetic number, because the mean of its divisors is an integer number (39124800).

Almost surely, 2^156064121 is an apocalyptic number.

It is an amenable number.

156064121 is a deficient number, since it is larger than the sum of its proper divisors (435079).

156064121 is an equidigital number, since it uses as much as digits as its factorization.

156064121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435078.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 156064121 is about 12492.5626274196. The cubic root of 156064121 is about 538.3950068698.

The spelling of 156064121 in words is "one hundred fifty-six million, sixty-four thousand, one hundred twenty-one".