126360081 has 15 divisors (see below), whose sum is σ = 188911371. Its totient is φ = 84172608.

The previous prime is 126360079. The next prime is 126360121. The reversal of 126360081 is 180063621.

The square root of 126360081 is 11241.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 51710481 + 74649600 = 7191^2 + 8640^2 .

It is not a de Polignac number, because 126360081 - 2¹ = 126360079 is a prime.

It is a super-2 number, since 2×126360081² = 31933740140653122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (126360011) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 100545 + ... + 101793.

Almost surely, 2^126360081 is an apocalyptic number.

126360081 is the 11241-st square number.

126360081 is the 5621-st centered octagonal number.

It is an amenable number.

126360081 is a deficient number, since it is larger than the sum of its proper divisors (62551290).

126360081 is an frugal number, since it uses more digits than its factorization.

126360081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2510 (or 1252 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The cubic root of 126360081 is about 501.8069036658.

The spelling of 126360081 in words is "one hundred twenty-six million, three hundred sixty thousand, eighty-one".