126290139 has 8 divisors (see below), whose sum is σ = 172938000. Its totient is φ = 81917856.

The previous prime is 126290123. The next prime is 126290141. The reversal of 126290139 is 931092621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 126290139 - 2⁴ = 126290123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126290189) 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, 568764 + ... + 568985.

It is an arithmetic number, because the mean of its divisors is an integer number (21617250).

Almost surely, 2^126290139 is an apocalyptic number.

126290139 is a deficient number, since it is larger than the sum of its proper divisors (46647861).

126290139 is a wasteful number, since it uses less digits than its factorization.

126290139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137789.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 126290139 is about 11237.8885472316. Note that the first 3 decimals coincide. The cubic root of 126290139 is about 501.7143009604.

The spelling of 126290139 in words is "one hundred twenty-six million, two hundred ninety thousand, one hundred thirty-nine".