126402536 has 24 divisors (see below), whose sum is σ = 256641030. Its totient is φ = 58339008.

The previous prime is 126402491. The next prime is 126402539. The reversal of 126402536 is 635204621.

It can be written as a sum of positive squares in 3 ways, for example, as 26522500 + 99880036 = 5150^2 + 9994^2 .

It is a super-2 number, since 2×126402536² = 31955202214462592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 126402499 and 126402508.

It is not an unprimeable number, because it can be changed into a prime (126402539) 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, 45395 + ... + 48098.

Almost surely, 2^126402536 is an apocalyptic number.

It is an amenable number.

126402536 is an abundant number, since it is smaller than the sum of its proper divisors (130238494).

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

126402536 is a wasteful number, since it uses less digits than its factorization.

126402536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93525 (or 93508 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 126402536 is about 11242.8882410171. Note that the first 3 decimals coincide. The cubic root of 126402536 is about 501.8630971155.

The spelling of 126402536 in words is "one hundred twenty-six million, four hundred two thousand, five hundred thirty-six".