142312521961 has 8 divisors (see below), whose sum is σ = 145827781344. Its totient is φ = 138799368480.

The previous prime is 142312521959. The next prime is 142312521977. The reversal of 142312521961 is 169125213241.

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 142312521961 - 2¹ = 142312521959 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142312521961.

It is not an unprimeable number, because it can be changed into a prime (142312531961) 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, 389215 + ... + 660388.

It is an arithmetic number, because the mean of its divisors is an integer number (18228472668).

Almost surely, 2^142312521961 is an apocalyptic number.

It is an amenable number.

142312521961 is a deficient number, since it is larger than the sum of its proper divisors (3515259383).

142312521961 is a wasteful number, since it uses less digits than its factorization.

142312521961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052951.

The product of its digits is 25920, while the sum is 37.

The spelling of 142312521961 in words is "one hundred forty-two billion, three hundred twelve million, five hundred twenty-one thousand, nine hundred sixty-one".