251326042 has 8 divisors (see below), whose sum is σ = 411260832. Its totient is φ = 114239100.

The previous prime is 251326027. The next prime is 251326043. The reversal of 251326042 is 240623152.

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

It is a junction number, because it is equal to n+sod(n) for n = 251325998 and 251326016.

It is not an unprimeable number, because it can be changed into a prime (251326043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5711934 + ... + 5711977.

It is an arithmetic number, because the mean of its divisors is an integer number (51407604).

Almost surely, 2^251326042 is an apocalyptic number.

251326042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

251326042 is a deficient number, since it is larger than the sum of its proper divisors (159934790).

251326042 is a wasteful number, since it uses less digits than its factorization.

251326042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11423924.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 251326042 is about 15853.2659726632. The cubic root of 251326042 is about 631.0723669454.

Adding to 251326042 its reverse (240623152), we get a palindrome (491949194).

The spelling of 251326042 in words is "two hundred fifty-one million, three hundred twenty-six thousand, forty-two".