142437070861 has 4 divisors (see below), whose sum is σ = 142439665372. Its totient is φ = 142434476352.

The previous prime is 142437070813. The next prime is 142437070999. The reversal of 142437070861 is 168070734241.

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 4939981225 + 137497089636 = 70285^2 + 370806^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142437070861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142437070801) 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, 1213086 + ... + 1325311.

It is an arithmetic number, because the mean of its divisors is an integer number (35609916343).

Almost surely, 2^142437070861 is an apocalyptic number.

It is an amenable number.

142437070861 is a deficient number, since it is larger than the sum of its proper divisors (2594511).

142437070861 is an equidigital number, since it uses as much as digits as its factorization.

142437070861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2594510.

The product of its (nonzero) digits is 225792, while the sum is 43.

The spelling of 142437070861 in words is "one hundred forty-two billion, four hundred thirty-seven million, seventy thousand, eight hundred sixty-one".