7142731904 has 128 divisors (see below), whose sum is σ = 17799799680. Its totient is φ = 2773647360.

The previous prime is 7142731891. The next prime is 7142731919. The reversal of 7142731904 is 4091372417.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

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, 3478142 + ... + 3480194.

It is an arithmetic number, because the mean of its divisors is an integer number (139060935).

Almost surely, 2^7142731904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7142731904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8899899840).

7142731904 is an abundant number, since it is smaller than the sum of its proper divisors (10657067776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7142731904 is a wasteful number, since it uses less digits than its factorization.

7142731904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2438 (or 2426 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 7142731904 is about 84514.6845465331. The cubic root of 7142731904 is about 1925.8455298569.

The spelling of 7142731904 in words is "seven billion, one hundred forty-two million, seven hundred thirty-one thousand, nine hundred four".