1251342444 has 48 divisors (see below), whose sum is σ = 3187731456. Its totient is φ = 378897600.

The previous prime is 1251342437. The next prime is 1251342457. The reversal of 1251342444 is 4442431521.

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, 213189 + ... + 218979.

It is an arithmetic number, because the mean of its divisors is an integer number (66411072).

Almost surely, 2^1251342444 is an apocalyptic number.

It is an amenable number.

1251342444 is an abundant number, since it is smaller than the sum of its proper divisors (1936389012).

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

1251342444 is a wasteful number, since it uses less digits than its factorization.

1251342444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7446 (or 7444 counting only the distinct ones).

The product of its digits is 15360, while the sum is 30.

The square root of 1251342444 is about 35374.3189899113. The cubic root of 1251342444 is about 1077.6028347724.

Adding to 1251342444 its reverse (4442431521), we get a palindrome (5693773965).

The spelling of 1251342444 in words is "one billion, two hundred fifty-one million, three hundred forty-two thousand, four hundred forty-four".