251142423 has 8 divisors (see below), whose sum is σ = 382693248. Its totient is φ = 143509944.

The previous prime is 251142389. The next prime is 251142427. The reversal of 251142423 is 324241152.

251142423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 251142423 - 2⁸ = 251142167 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 251142393 and 251142402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251142427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5979561 + ... + 5979602.

It is an arithmetic number, because the mean of its divisors is an integer number (47836656).

Almost surely, 2^251142423 is an apocalyptic number.

251142423 is a deficient number, since it is larger than the sum of its proper divisors (131550825).

251142423 is a wasteful number, since it uses less digits than its factorization.

251142423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11959173.

The product of its digits is 1920, while the sum is 24.

The square root of 251142423 is about 15847.4737103426. The cubic root of 251142423 is about 630.9186421829.

Adding to 251142423 its reverse (324241152), we get a palindrome (575383575).

The spelling of 251142423 in words is "two hundred fifty-one million, one hundred forty-two thousand, four hundred twenty-three".