70256121 has 16 divisors (see below), whose sum is σ = 106815744. Its totient is φ = 40690944.

The previous prime is 70256077. The next prime is 70256161. The reversal of 70256121 is 12165207.

It is not a de Polignac number, because 70256121 - 2⁶ = 70256057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70256091 and 70256100.

It is not an unprimeable number, because it can be changed into a prime (70256161) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 52321 + ... + 53646.

It is an arithmetic number, because the mean of its divisors is an integer number (6675984).

Almost surely, 2^70256121 is an apocalyptic number.

It is an amenable number.

70256121 is a deficient number, since it is larger than the sum of its proper divisors (36559623).

70256121 is a wasteful number, since it uses less digits than its factorization.

70256121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106000.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 70256121 is about 8381.8924474131. The cubic root of 70256121 is about 412.6305599578.

The spelling of 70256121 in words is "seventy million, two hundred fifty-six thousand, one hundred twenty-one".