126404992502 has 4 divisors (see below), whose sum is σ = 189607488756. Its totient is φ = 63202496250.

The previous prime is 126404992499. The next prime is 126404992529. The reversal of 126404992502 is 205299404621.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31601248124 + ... + 31601248127.

It is an arithmetic number, because the mean of its divisors is an integer number (47401872189).

Almost surely, 2^126404992502 is an apocalyptic number.

126404992502 is a deficient number, since it is larger than the sum of its proper divisors (63202496254).

126404992502 is an equidigital number, since it uses as much as digits as its factorization.

126404992502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63202496253.

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 126404992502 in words is "one hundred twenty-six billion, four hundred four million, nine hundred ninety-two thousand, five hundred two".