142722156 has 24 divisors (see below), whose sum is σ = 336254464. Its totient is φ = 47111760.

The previous prime is 142722143. The next prime is 142722187. The reversal of 142722156 is 651227241.

It is a super-2 number, since 2×142722156² = 40739227626576672, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56500 + ... + 58971.

Almost surely, 2^142722156 is an apocalyptic number.

It is an amenable number.

142722156 is an abundant number, since it is smaller than the sum of its proper divisors (193532308).

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

142722156 is a wasteful number, since it uses less digits than its factorization.

142722156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115581 (or 115579 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 142722156 is about 11946.6378533879. The cubic root of 142722156 is about 522.5932539612.

Adding to 142722156 its reverse (651227241), we get a palindrome (793949397).

The spelling of 142722156 in words is "one hundred forty-two million, seven hundred twenty-two thousand, one hundred fifty-six".