126509652 has 36 divisors (see below), whose sum is σ = 323843520. Its totient is φ = 41635152.

The previous prime is 126509639. The next prime is 126509701. The reversal of 126509652 is 256905621.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×126509652² = 32009384098322208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19398 + ... + 25085.

Almost surely, 2^126509652 is an apocalyptic number.

126509652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

126509652 is an abundant number, since it is smaller than the sum of its proper divisors (197333868).

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

126509652 is a wasteful number, since it uses less digits than its factorization.

126509652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44572 (or 44567 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 126509652 is about 11247.6509547550. The cubic root of 126509652 is about 502.0048199830.

The spelling of 126509652 in words is "one hundred twenty-six million, five hundred nine thousand, six hundred fifty-two".