1247398514 has 32 divisors (see below), whose sum is σ = 2005928064. Its totient is φ = 580328320.

The previous prime is 1247398499. The next prime is 1247398561. The reversal of 1247398514 is 4158937421.

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, 834752 + ... + 836244.

It is an arithmetic number, because the mean of its divisors is an integer number (62685252).

Almost surely, 2^1247398514 is an apocalyptic number.

1247398514 is a deficient number, since it is larger than the sum of its proper divisors (758529550).

1247398514 is a wasteful number, since it uses less digits than its factorization.

1247398514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002.

The product of its digits is 241920, while the sum is 44.

The square root of 1247398514 is about 35318.5293295177. The cubic root of 1247398514 is about 1076.4695284354.

The spelling of 1247398514 in words is "one billion, two hundred forty-seven million, three hundred ninety-eight thousand, five hundred fourteen".