72142954 has 8 divisors (see below), whose sum is σ = 116538660. Its totient is φ = 33296736.

The previous prime is 72142937. The next prime is 72142997. The reversal of 72142954 is 45924127.

It can be written as a sum of positive squares in 2 ways, for example, as 69973225 + 2169729 = 8365^2 + 1473^2 .

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

It is a super-2 number, since 2×72142954² = 10409211623692232, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1387339 + ... + 1387390.

Almost surely, 2^72142954 is an apocalyptic number.

72142954 is a deficient number, since it is larger than the sum of its proper divisors (44395706).

72142954 is a wasteful number, since it uses less digits than its factorization.

72142954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2774744.

The product of its digits is 20160, while the sum is 34.

The square root of 72142954 is about 8493.7008423890. The cubic root of 72142954 is about 416.2919125012.

The spelling of 72142954 in words is "seventy-two million, one hundred forty-two thousand, nine hundred fifty-four".