142891275 has 24 divisors (see below), whose sum is σ = 236593984. Its totient is φ = 76096800.

The previous prime is 142891247. The next prime is 142891283. The reversal of 142891275 is 572198241.

It is not a de Polignac number, because 142891275 - 2¹⁴ = 142874891 is a prime.

It is a super-2 number, since 2×142891275² = 40835832942251250, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87012 + ... + 88638.

Almost surely, 2^142891275 is an apocalyptic number.

142891275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

142891275 is a deficient number, since it is larger than the sum of its proper divisors (93702709).

142891275 is a wasteful number, since it uses less digits than its factorization.

142891275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2811 (or 2806 counting only the distinct ones).

The product of its digits is 40320, while the sum is 39.

The square root of 142891275 is about 11953.7138580443. The cubic root of 142891275 is about 522.7995885745.

The spelling of 142891275 in words is "one hundred forty-two million, eight hundred ninety-one thousand, two hundred seventy-five".