1247053137 has 16 divisors (see below), whose sum is σ = 1834280640. Its totient is φ = 747296000.

The previous prime is 1247053133. The next prime is 1247053183. The reversal of 1247053137 is 7313507421.

It is not a de Polignac number, because 1247053137 - 2² = 1247053133 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 1247053098 and 1247053107.

It is not an unprimeable number, because it can be changed into a prime (1247053133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 209364 + ... + 215237.

It is an arithmetic number, because the mean of its divisors is an integer number (114642540).

Almost surely, 2^1247053137 is an apocalyptic number.

It is an amenable number.

1247053137 is a deficient number, since it is larger than the sum of its proper divisors (587227503).

1247053137 is a wasteful number, since it uses less digits than its factorization.

1247053137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424704.

The product of its (nonzero) digits is 17640, while the sum is 33.

The square root of 1247053137 is about 35313.6395320562. The cubic root of 1247053137 is about 1076.3701690805.

The spelling of 1247053137 in words is "one billion, two hundred forty-seven million, fifty-three thousand, one hundred thirty-seven".