1429172872 has 16 divisors (see below), whose sum is σ = 2680194240. Its totient is φ = 714454416.

The previous prime is 1429172869. The next prime is 1429172879. The reversal of 1429172872 is 2782719241.

It is not an unprimeable number, because it can be changed into a prime (1429172879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41493 + ... + 67675.

It is an arithmetic number, because the mean of its divisors is an integer number (167512140).

Almost surely, 2^1429172872 is an apocalyptic number.

It is an amenable number.

1429172872 is a deficient number, since it is larger than the sum of its proper divisors (1251021368).

1429172872 is a wasteful number, since it uses less digits than its factorization.

1429172872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33012 (or 33008 counting only the distinct ones).

The product of its digits is 112896, while the sum is 43.

The square root of 1429172872 is about 37804.4028123709. The cubic root of 1429172872 is about 1126.4059122915.

The spelling of 1429172872 in words is "one billion, four hundred twenty-nine million, one hundred seventy-two thousand, eight hundred seventy-two".