426639127 has 2 divisors, whose sum is σ = 426639128. Its totient is φ = 426639126.

The previous prime is 426639107. The next prime is 426639131. The reversal of 426639127 is 721936624.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 426639127 - 2²⁷ = 292421399 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 426639127.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426639107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213319563 + 213319564.

It is an arithmetic number, because the mean of its divisors is an integer number (213319564).

Almost surely, 2^426639127 is an apocalyptic number.

426639127 is a deficient number, since it is larger than the sum of its proper divisors (1).

426639127 is an equidigital number, since it uses as much as digits as its factorization.

426639127 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 40.

The square root of 426639127 is about 20655.2445398257. The cubic root of 426639127 is about 752.8126253697.

The spelling of 426639127 in words is "four hundred twenty-six million, six hundred thirty-nine thousand, one hundred twenty-seven".