251142036 has 24 divisors (see below), whose sum is σ = 604902144. Its totient is φ = 81013440.

The previous prime is 251142029. The next prime is 251142041. The reversal of 251142036 is 630241152.

251142036 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 251141997 and 251142015.

It is a congruent number.

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, 337185 + ... + 337928.

It is an arithmetic number, because the mean of its divisors is an integer number (25204256).

Almost surely, 2^251142036 is an apocalyptic number.

It is an amenable number.

251142036 is an abundant number, since it is smaller than the sum of its proper divisors (353760108).

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

251142036 is a wasteful number, since it uses less digits than its factorization.

251142036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675151 (or 675149 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 251142036 is about 15847.4615001899. The cubic root of 251142036 is about 630.9183181097.

Adding to 251142036 its reverse (630241152), we get a palindrome (881383188).

The spelling of 251142036 in words is "two hundred fifty-one million, one hundred forty-two thousand, thirty-six".