1402472731 has 8 divisors (see below), whose sum is σ = 1530284400. Its totient is φ = 1274713440.

The previous prime is 1402472723. The next prime is 1402472737. The reversal of 1402472731 is 1372742041.

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

It is not a de Polignac number, because 1402472731 - 2³ = 1402472723 is a prime.

It is a super-2 number, since 2×1402472731² = 3933859522397196722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1402472693 and 1402472702.

It is not an unprimeable number, because it can be changed into a prime (1402472737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61305 + ... + 81013.

It is an arithmetic number, because the mean of its divisors is an integer number (191285550).

Almost surely, 2^1402472731 is an apocalyptic number.

1402472731 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1402472731 is a deficient number, since it is larger than the sum of its proper divisors (127811669).

1402472731 is a wasteful number, since it uses less digits than its factorization.

1402472731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26189.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 1402472731 is about 37449.6025479577. The cubic root of 1402472731 is about 1119.3471777540.

The spelling of 1402472731 in words is "one billion, four hundred two million, four hundred seventy-two thousand, seven hundred thirty-one".