71142402472 has 8 divisors (see below), whose sum is σ = 133392004650. Its totient is φ = 35571201232.

The previous prime is 71142402403. The next prime is 71142402517. The reversal of 71142402472 is 27420424117.

It can be written as a sum of positive squares in only one way, i.e., 67285247236 + 3857155236 = 259394^2 + 62106^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×71142402472² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4446400147 + ... + 4446400162.

Almost surely, 2^71142402472 is an apocalyptic number.

It is an amenable number.

71142402472 is a deficient number, since it is larger than the sum of its proper divisors (62249602178).

71142402472 is a wasteful number, since it uses less digits than its factorization.

71142402472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8892800315 (or 8892800311 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 34.

Adding to 71142402472 its reverse (27420424117), we get a palindrome (98562826589).

The spelling of 71142402472 in words is "seventy-one billion, one hundred forty-two million, four hundred two thousand, four hundred seventy-two".