126536 has 8 divisors (see below), whose sum is σ = 237270. Its totient is φ = 63264.

The previous prime is 126517. The next prime is 126541. The reversal of 126536 is 635621.

It can be written as a sum of positive squares in only one way, i.e., 84100 + 42436 = 290^2 + 206^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×126536² = 32022718592, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7901 + ... + 7916.

2¹²⁶⁵³⁶ is an apocalyptic number.

It is an amenable number.

126536 is a deficient number, since it is larger than the sum of its proper divisors (110734).

126536 is a wasteful number, since it uses less digits than its factorization.

126536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15823 (or 15819 counting only the distinct ones).

The product of its digits is 1080, while the sum is 23.

The square root of 126536 is about 355.7189902156. The cubic root of 126536 is about 50.2039668193.

The spelling of 126536 in words is "one hundred twenty-six thousand, five hundred thirty-six".