142265531 has 8 divisors (see below), whose sum is σ = 147029904. Its totient is φ = 137562880.

The previous prime is 142265509. The next prime is 142265533. The reversal of 142265531 is 135562241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142265531 - 2¹⁸ = 142003387 is a prime.

It is a super-2 number, since 2×142265531² = 40478962621423922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142265494 and 142265503.

It is not an unprimeable number, because it can be changed into a prime (142265533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10721 + ... + 19986.

It is an arithmetic number, because the mean of its divisors is an integer number (18378738).

Almost surely, 2^142265531 is an apocalyptic number.

142265531 is a deficient number, since it is larger than the sum of its proper divisors (4764373).

142265531 is a wasteful number, since it uses less digits than its factorization.

142265531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30861.

The product of its digits is 7200, while the sum is 29.

The square root of 142265531 is about 11927.5115174960. The cubic root of 142265531 is about 522.0353305701.

The spelling of 142265531 in words is "one hundred forty-two million, two hundred sixty-five thousand, five hundred thirty-one".