126400504 has 8 divisors (see below), whose sum is σ = 237000960. Its totient is φ = 63200248.

The previous prime is 126400501. The next prime is 126400507. The reversal of 126400504 is 405004621.

It is an interprime number because it is at equal distance from previous prime (126400501) and next prime (126400507).

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×126400504² = 31954174822908032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126400501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7900024 + ... + 7900039.

It is an arithmetic number, because the mean of its divisors is an integer number (29625120).

Almost surely, 2^126400504 is an apocalyptic number.

It is an amenable number.

126400504 is a deficient number, since it is larger than the sum of its proper divisors (110600456).

126400504 is a wasteful number, since it uses less digits than its factorization.

126400504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15800069 (or 15800065 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 126400504 is about 11242.7978724159. The cubic root of 126400504 is about 501.8604078465.

The spelling of 126400504 in words is "one hundred twenty-six million, four hundred thousand, five hundred four".