126423555640 has 16 divisors (see below), whose sum is σ = 284453000280. Its totient is φ = 50569422240.

The previous prime is 126423555619. The next prime is 126423555641. The reversal of 126423555640 is 46555324621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126423555641) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1580294406 + ... + 1580294485.

Almost surely, 2^126423555640 is an apocalyptic number.

126423555640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126423555640 is an abundant number, since it is smaller than the sum of its proper divisors (158029444640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126423555640 is a wasteful number, since it uses less digits than its factorization.

126423555640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3160588902 (or 3160588898 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 43.

The spelling of 126423555640 in words is "one hundred twenty-six billion, four hundred twenty-three million, five hundred fifty-five thousand, six hundred forty".