126423756 has 18 divisors (see below), whose sum is σ = 319571252. Its totient is φ = 42141240.

The previous prime is 126423751. The next prime is 126423767. The reversal of 126423756 is 657324621.

126423756 is a `hidden beast` number, since 1 + 2 + 642 + 3 + 7 + 5 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×126423756² = 31965932162295072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 3511771 = 126423756 / (1 + 2 + 6 + 4 + 2 + 3 + 7 + 5 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 126423756.

It is not an unprimeable number, because it can be changed into a prime (126423751) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1755850 + ... + 1755921.

Almost surely, 2^126423756 is an apocalyptic number.

It is an amenable number.

126423756 is an abundant number, since it is smaller than the sum of its proper divisors (193147496).

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

126423756 is a wasteful number, since it uses less digits than its factorization.

126423756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3511781 (or 3511776 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 126423756 is about 11243.8319090958. The cubic root of 126423756 is about 501.8911791973.

The spelling of 126423756 in words is "one hundred twenty-six million, four hundred twenty-three thousand, seven hundred fifty-six".