142868772 has 30 divisors (see below), whose sum is σ = 373488038. Its totient is φ = 47622816.

The previous prime is 142868753. The next prime is 142868773. The reversal of 142868772 is 277868241.

It can be written as a sum of positive squares in only one way, i.e., 119771136 + 23097636 = 10944^2 + 4806^2 .

It is a super-2 number, since 2×142868772² = 40822972025575968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142868773) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 220153 + ... + 220800.

Almost surely, 2^142868772 is an apocalyptic number.

142868772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

142868772 is an abundant number, since it is smaller than the sum of its proper divisors (230619266).

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

142868772 is a wasteful number, since it uses less digits than its factorization.

142868772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440969 (or 440958 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 142868772 is about 11952.7725653925. The cubic root of 142868772 is about 522.7721430528.

The spelling of 142868772 in words is "one hundred forty-two million, eight hundred sixty-eight thousand, seven hundred seventy-two".