70120157 has 2 divisors, whose sum is σ = 70120158. Its totient is φ = 70120156.

The previous prime is 70120151. The next prime is 70120177. The reversal of 70120157 is 75102107.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51681721 + 18438436 = 7189^2 + 4294^2 .

It is a cyclic number.

It is not a de Polignac number, because 70120157 - 2¹⁴ = 70103773 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70120151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35060078 + 35060079.

It is an arithmetic number, because the mean of its divisors is an integer number (35060079).

Almost surely, 2^70120157 is an apocalyptic number.

It is an amenable number.

70120157 is a deficient number, since it is larger than the sum of its proper divisors (1).

70120157 is an equidigital number, since it uses as much as digits as its factorization.

70120157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 490, while the sum is 23.

The square root of 70120157 is about 8373.7779406908. Note that the first 3 decimals coincide. The cubic root of 70120157 is about 412.3642053167.

The spelling of 70120157 in words is "seventy million, one hundred twenty thousand, one hundred fifty-seven".