251230353042 has 16 divisors (see below), whose sum is σ = 502514096832. Its totient is φ = 83734552560.

The previous prime is 251230353019. The next prime is 251230353131. The reversal of 251230353042 is 240353032152.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2163313 + ... + 2276484.

It is an arithmetic number, because the mean of its divisors is an integer number (31407131052).

Almost surely, 2^251230353042 is an apocalyptic number.

251230353042 is an abundant number, since it is smaller than the sum of its proper divisors (251283743790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

251230353042 is a wasteful number, since it uses less digits than its factorization.

251230353042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4449233.

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 251230353042 its reverse (240353032152), we get a palindrome (491583385194).

The spelling of 251230353042 in words is "two hundred fifty-one billion, two hundred thirty million, three hundred fifty-three thousand, forty-two".