72142162 has 4 divisors (see below), whose sum is σ = 108213246. Its totient is φ = 36071080.

The previous prime is 72142153. The next prime is 72142171. The reversal of 72142162 is 26124127.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (72142153) and next prime (72142171).

It can be written as a sum of positive squares in only one way, i.e., 55487601 + 16654561 = 7449^2 + 4081^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18035539 + ... + 18035542.

Almost surely, 2^72142162 is an apocalyptic number.

72142162 is a deficient number, since it is larger than the sum of its proper divisors (36071084).

72142162 is a wasteful number, since it uses less digits than its factorization.

72142162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36071083.

The product of its digits is 1344, while the sum is 25.

The square root of 72142162 is about 8493.6542194747. The cubic root of 72142162 is about 416.2903891166.

Adding to 72142162 its reverse (26124127), we get a palindrome (98266289).

The spelling of 72142162 in words is "seventy-two million, one hundred forty-two thousand, one hundred sixty-two".