1247152641 has 8 divisors (see below), whose sum is σ = 1900423104. Its totient is φ = 712658640.

The previous prime is 1247152633. The next prime is 1247152651. The reversal of 1247152641 is 1462517421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1247152641 - 2³ = 1247152633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1247152601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29694090 + ... + 29694131.

It is an arithmetic number, because the mean of its divisors is an integer number (237552888).

Almost surely, 2^1247152641 is an apocalyptic number.

It is an amenable number.

1247152641 is a deficient number, since it is larger than the sum of its proper divisors (653270463).

1247152641 is an equidigital number, since it uses as much as digits as its factorization.

1247152641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59388231.

The product of its digits is 13440, while the sum is 33.

The square root of 1247152641 is about 35315.0483646844. The cubic root of 1247152641 is about 1076.3987966467.

The spelling of 1247152641 in words is "one billion, two hundred forty-seven million, one hundred fifty-two thousand, six hundred forty-one".