142891272 has 48 divisors (see below), whose sum is σ = 403827840. Its totient is φ = 45559008.

The previous prime is 142891247. The next prime is 142891283. The reversal of 142891272 is 272198241.

It is a super-2 number, since 2×142891272² = 40835831227555968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41488 + ... + 44799.

It is an arithmetic number, because the mean of its divisors is an integer number (8413080).

Almost surely, 2^142891272 is an apocalyptic number.

142891272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

142891272 is an abundant number, since it is smaller than the sum of its proper divisors (260936568).

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

142891272 is a wasteful number, since it uses less digits than its factorization.

142891272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86322 (or 86315 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 142891272 is about 11953.7137325603. The cubic root of 142891272 is about 522.7995849158.

The spelling of 142891272 in words is "one hundred forty-two million, eight hundred ninety-one thousand, two hundred seventy-two".