1249284057 has 24 divisors (see below), whose sum is σ = 1940825376. Its totient is φ = 712712448.

The previous prime is 1249284053. The next prime is 1249284059. The reversal of 1249284057 is 7504829421.

It is not a de Polignac number, because 1249284057 - 2² = 1249284053 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1249284053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87913 + ... + 101129.

It is an arithmetic number, because the mean of its divisors is an integer number (80867724).

Almost surely, 2^1249284057 is an apocalyptic number.

It is an amenable number.

1249284057 is a deficient number, since it is larger than the sum of its proper divisors (691541319).

1249284057 is a wasteful number, since it uses less digits than its factorization.

1249284057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13877 (or 13870 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 1249284057 is about 35345.2126461279. The cubic root of 1249284057 is about 1077.0116454145.

The spelling of 1249284057 in words is "one billion, two hundred forty-nine million, two hundred eighty-four thousand, fifty-seven".