142536400139 has 16 divisors (see below), whose sum is σ = 163786634496. Its totient is φ = 121509261600.

The previous prime is 142536400099. The next prime is 142536400163. The reversal of 142536400139 is 931004635241.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142536400139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142536400169) 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, 1496729 + ... + 1589109.

It is an arithmetic number, because the mean of its divisors is an integer number (10236664656).

Almost surely, 2^142536400139 is an apocalyptic number.

142536400139 is a deficient number, since it is larger than the sum of its proper divisors (21250234357).

142536400139 is an equidigital number, since it uses as much as digits as its factorization.

142536400139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93586.

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 142536400139 in words is "one hundred forty-two billion, five hundred thirty-six million, four hundred thousand, one hundred thirty-nine".