252070139 has 2 divisors, whose sum is σ = 252070140. Its totient is φ = 252070138.

The previous prime is 252070129. The next prime is 252070141. The reversal of 252070139 is 931070252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 252070139 - 2⁴ = 252070123 is a prime.

Together with 252070141, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (252070109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126035069 + 126035070.

It is an arithmetic number, because the mean of its divisors is an integer number (126035070).

Almost surely, 2^252070139 is an apocalyptic number.

252070139 is a deficient number, since it is larger than the sum of its proper divisors (1).

252070139 is an equidigital number, since it uses as much as digits as its factorization.

252070139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 252070139 is about 15876.7168835374. The cubic root of 252070139 is about 631.6945552749.

The spelling of 252070139 in words is "two hundred fifty-two million, seventy thousand, one hundred thirty-nine".