126291536 has 20 divisors (see below), whose sum is σ = 279645792. Its totient is φ = 54124896.

The previous prime is 126291509. The next prime is 126291541. The reversal of 126291536 is 635192621.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 126291496 and 126291505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 563690 + ... + 563913.

Almost surely, 2^126291536 is an apocalyptic number.

126291536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

126291536 is an abundant number, since it is smaller than the sum of its proper divisors (153354256).

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

126291536 is a wasteful number, since it uses less digits than its factorization.

126291536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127618 (or 1127612 counting only the distinct ones).

The product of its digits is 19440, while the sum is 35.

The square root of 126291536 is about 11237.9507028639. The cubic root of 126291536 is about 501.7161509129.

The spelling of 126291536 in words is "one hundred twenty-six million, two hundred ninety-one thousand, five hundred thirty-six".