126165560 has 32 divisors (see below), whose sum is σ = 291548160. Its totient is φ = 49101696.

The previous prime is 126165553. The next prime is 126165563. The reversal of 126165560 is 65561621.

It is a super-2 number, since 2×126165560² = 31835497060227200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126165563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41144 + ... + 44103.

It is an arithmetic number, because the mean of its divisors is an integer number (9110880).

Almost surely, 2^126165560 is an apocalyptic number.

126165560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126165560 is an abundant number, since it is smaller than the sum of its proper divisors (165382600).

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

126165560 is a wasteful number, since it uses less digits than its factorization.

126165560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85295 (or 85291 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 126165560 is about 11232.3443679403. The cubic root of 126165560 is about 501.5492745386.

The spelling of 126165560 in words is "one hundred twenty-six million, one hundred sixty-five thousand, five hundred sixty".