126251251390 has 32 divisors (see below), whose sum is σ = 250366140000. Its totient is φ = 45454992000.

The previous prime is 126251251367. The next prime is 126251251391. The reversal of 126251251390 is 93152152621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126251251391) 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, 5670765 + ... + 5692984.

It is an arithmetic number, because the mean of its divisors is an integer number (7823941875).

Almost surely, 2^126251251390 is an apocalyptic number.

126251251390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126251251390 is a deficient number, since it is larger than the sum of its proper divisors (124114888610).

126251251390 is a wasteful number, since it uses less digits than its factorization.

126251251390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11363868.

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 126251251390 in words is "one hundred twenty-six billion, two hundred fifty-one million, two hundred fifty-one thousand, three hundred ninety".