126501250139 has 4 divisors (see below), whose sum is σ = 138001363800. Its totient is φ = 115001136480.

The previous prime is 126501250121. The next prime is 126501250147. The reversal of 126501250139 is 931052105621.

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

It is a cyclic number.

It is not a de Polignac number, because 126501250139 - 2⁸ = 126501249883 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126501250099 and 126501250108.

It is not an unprimeable number, because it can be changed into a prime (126501252139) 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, 5750056814 + ... + 5750056835.

It is an arithmetic number, because the mean of its divisors is an integer number (34500340950).

Almost surely, 2^126501250139 is an apocalyptic number.

126501250139 is a deficient number, since it is larger than the sum of its proper divisors (11500113661).

126501250139 is a wasteful number, since it uses less digits than its factorization.

126501250139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11500113660.

The product of its (nonzero) digits is 16200, while the sum is 35.

The spelling of 126501250139 in words is "one hundred twenty-six billion, five hundred one million, two hundred fifty thousand, one hundred thirty-nine".