142568531 has 16 divisors (see below), whose sum is σ = 167049216. Its totient is φ = 119137056.

The previous prime is 142568527. The next prime is 142568537. The reversal of 142568531 is 135865241.

It is a cyclic number.

It is not a de Polignac number, because 142568531 - 2² = 142568527 is a prime.

It is a super-2 number, since 2×142568531² = 40651572062995922, 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 = 142568491 and 142568500.

It is not an unprimeable number, because it can be changed into a prime (142568537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103610 + ... + 104976.

It is an arithmetic number, because the mean of its divisors is an integer number (10440576).

Almost surely, 2^142568531 is an apocalyptic number.

142568531 is a deficient number, since it is larger than the sum of its proper divisors (24480685).

142568531 is a wasteful number, since it uses less digits than its factorization.

142568531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1738.

The product of its digits is 28800, while the sum is 35.

The square root of 142568531 is about 11940.2064890018. The cubic root of 142568531 is about 522.4056815627.

The spelling of 142568531 in words is "one hundred forty-two million, five hundred sixty-eight thousand, five hundred thirty-one".