126690556 has 24 divisors (see below), whose sum is σ = 238810880. Its totient is φ = 58614192.

The previous prime is 126690547. The next prime is 126690559. The reversal of 126690556 is 655096621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126690559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16116 + ... + 22651.

Almost surely, 2^126690556 is an apocalyptic number.

It is an amenable number.

126690556 is a deficient number, since it is larger than the sum of its proper divisors (112120324).

126690556 is a wasteful number, since it uses less digits than its factorization.

126690556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38833 (or 38831 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 126690556 is about 11255.6899388709. The cubic root of 126690556 is about 502.2439886306.

The spelling of 126690556 in words is "one hundred twenty-six million, six hundred ninety thousand, five hundred fifty-six".