142862102557561 has 4 divisors (see below), whose sum is σ = 142862783293300. Its totient is φ = 142861421821824.

The previous prime is 142862102557547. The next prime is 142862102557619. The reversal of 142862102557561 is 165755201268241.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 52308607835961 + 90553494721600 = 7232469^2 + 9515960^2 .

It is a cyclic number.

It is not a de Polignac number, because 142862102557561 - 2⁵ = 142862102557529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142862102557661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340052976 + ... + 340472833.

It is an arithmetic number, because the mean of its divisors is an integer number (35715695823325).

Almost surely, 2^{142862102557561} is an apocalyptic number.

It is an amenable number.

142862102557561 is a deficient number, since it is larger than the sum of its proper divisors (680735739).

142862102557561 is an equidigital number, since it uses as much as digits as its factorization.

142862102557561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680735738.

The product of its (nonzero) digits is 8064000, while the sum is 55.

The spelling of 142862102557561 in words is "one hundred forty-two trillion, eight hundred sixty-two billion, one hundred two million, five hundred fifty-seven thousand, five hundred sixty-one".