251426423 has 2 divisors, whose sum is σ = 251426424. Its totient is φ = 251426422.

The previous prime is 251426419. The next prime is 251426429. The reversal of 251426423 is 324624152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 251426423 - 2² = 251426419 is a prime.

It is equal to p_13753154 and since 251426423 and 13753154 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251426429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125713211 + 125713212.

It is an arithmetic number, because the mean of its divisors is an integer number (125713212).

Almost surely, 2^251426423 is an apocalyptic number.

251426423 is a deficient number, since it is larger than the sum of its proper divisors (1).

251426423 is an equidigital number, since it uses as much as digits as its factorization.

251426423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 29.

The square root of 251426423 is about 15856.4315973046. The cubic root of 251426423 is about 631.1563736840.

The spelling of 251426423 in words is "two hundred fifty-one million, four hundred twenty-six thousand, four hundred twenty-three".