251042112 has 112 divisors (see below), whose sum is σ = 744321600. Its totient is φ = 82967040.

The previous prime is 251042081. The next prime is 251042137. The reversal of 251042112 is 211240152.

251042112 is a `hidden beast` number, since 2 + 510 + 42 + 112 = 666.

251042112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225814 + ... + 226922.

Almost surely, 2^251042112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 251042112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (372160800).

251042112 is an abundant number, since it is smaller than the sum of its proper divisors (493279488).

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

251042112 is a wasteful number, since it uses less digits than its factorization.

251042112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1261 (or 1245 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 251042112 is about 15844.3085049490. The cubic root of 251042112 is about 630.8346307454.

Adding to 251042112 its reverse (211240152), we get a palindrome (462282264).

The spelling of 251042112 in words is "two hundred fifty-one million, forty-two thousand, one hundred twelve".