142967561 has 32 divisors (see below), whose sum is σ = 167270400. Its totient is φ = 121020480.

The previous prime is 142967557. The next prime is 142967581. The reversal of 142967561 is 165769241.

It is a cyclic number.

It is not a de Polignac number, because 142967561 - 2² = 142967557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142967521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1311575 + ... + 1311683.

It is an arithmetic number, because the mean of its divisors is an integer number (5227200).

Almost surely, 2^142967561 is an apocalyptic number.

142967561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

142967561 is a deficient number, since it is larger than the sum of its proper divisors (24302839).

142967561 is a wasteful number, since it uses less digits than its factorization.

142967561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269.

The product of its digits is 90720, while the sum is 41.

The square root of 142967561 is about 11956.9043234443. The cubic root of 142967561 is about 522.8926084694.

The spelling of 142967561 in words is "one hundred forty-two million, nine hundred sixty-seven thousand, five hundred sixty-one".