424252139 has 2 divisors, whose sum is σ = 424252140. Its totient is φ = 424252138.

The previous prime is 424252117. The next prime is 424252163. The reversal of 424252139 is 931252424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 424252139 - 2²⁰ = 423203563 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (424252109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212126069 + 212126070.

It is an arithmetic number, because the mean of its divisors is an integer number (212126070).

Almost surely, 2^424252139 is an apocalyptic number.

424252139 is a deficient number, since it is larger than the sum of its proper divisors (1).

424252139 is an equidigital number, since it uses as much as digits as its factorization.

424252139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 32.

The square root of 424252139 is about 20597.3818481864. The cubic root of 424252139 is about 751.4060373942.

The spelling of 424252139 in words is "four hundred twenty-four million, two hundred fifty-two thousand, one hundred thirty-nine".