126390501 has 12 divisors (see below), whose sum is σ = 182714220. Its totient is φ = 84191040.

The previous prime is 126390493. The next prime is 126390553. The reversal of 126390501 is 105093621.

126390501 is a `hidden beast` number, since 12 + 63 + 90 + 501 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 92448225 + 33942276 = 9615^2 + 5826^2 .

It is not a de Polignac number, because 126390501 - 2³ = 126390493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126390571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7345 + ... + 17513.

It is an arithmetic number, because the mean of its divisors is an integer number (15226185).

Almost surely, 2^126390501 is an apocalyptic number.

It is an amenable number.

126390501 is a deficient number, since it is larger than the sum of its proper divisors (56323719).

126390501 is a wasteful number, since it uses less digits than its factorization.

126390501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11556 (or 11553 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 126390501 is about 11242.3530010403. The cubic root of 126390501 is about 501.8471688642.

The spelling of 126390501 in words is "one hundred twenty-six million, three hundred ninety thousand, five hundred one".