142963531 has 4 divisors (see below), whose sum is σ = 142988632. Its totient is φ = 142938432.

The previous prime is 142963517. The next prime is 142963553. The reversal of 142963531 is 135369241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135369241 = 7 ⋅19338463.

It is a cyclic number.

It is not a de Polignac number, because 142963531 - 2⁹ = 142963019 is a prime.

It is a super-2 number, since 2×142963531² = 40877142391975922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142963501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 556 + ... + 16918.

It is an arithmetic number, because the mean of its divisors is an integer number (35747158).

Almost surely, 2^142963531 is an apocalyptic number.

142963531 is a deficient number, since it is larger than the sum of its proper divisors (25101).

142963531 is an equidigital number, since it uses as much as digits as its factorization.

142963531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25100.

The product of its digits is 19440, while the sum is 34.

The square root of 142963531 is about 11956.7358003763. The cubic root of 142963531 is about 522.8876952872.

The spelling of 142963531 in words is "one hundred forty-two million, nine hundred sixty-three thousand, five hundred thirty-one".