70120139 has 2 divisors, whose sum is σ = 70120140. Its totient is φ = 70120138.

The previous prime is 70120133. The next prime is 70120147. The reversal of 70120139 is 93102107.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70120139 is a prime.

It is not a weakly prime, because it can be changed into another prime (70120133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35060069 + 35060070.

It is an arithmetic number, because the mean of its divisors is an integer number (35060070).

Almost surely, 2^70120139 is an apocalyptic number.

70120139 is a deficient number, since it is larger than the sum of its proper divisors (1).

70120139 is an equidigital number, since it uses as much as digits as its factorization.

70120139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 70120139 is about 8373.7768659070. The cubic root of 70120139 is about 412.3641700318.

The spelling of 70120139 in words is "seventy million, one hundred twenty thousand, one hundred thirty-nine".