126400382734 has 4 divisors (see below), whose sum is σ = 189600574104. Its totient is φ = 63200191366.

The previous prime is 126400382701. The next prime is 126400382743. The reversal of 126400382734 is 437283004621.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 437283004621 = 130183 ⋅3358987.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31600095682 + ... + 31600095685.

It is an arithmetic number, because the mean of its divisors is an integer number (47400143526).

Almost surely, 2^126400382734 is an apocalyptic number.

126400382734 is a deficient number, since it is larger than the sum of its proper divisors (63200191370).

126400382734 is an equidigital number, since it uses as much as digits as its factorization.

126400382734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63200191369.

The product of its (nonzero) digits is 193536, while the sum is 40.

The spelling of 126400382734 in words is "one hundred twenty-six billion, four hundred million, three hundred eighty-two thousand, seven hundred thirty-four".