126360731 has 4 divisors (see below), whose sum is σ = 144412272. Its totient is φ = 108309192.

The previous prime is 126360721. The next prime is 126360749. The reversal of 126360731 is 137063621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 126360731 - 2⁶ = 126360667 is a prime.

It is a super-2 number, since 2×126360731² = 31934068677708722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126360694 and 126360703.

It is not an unprimeable number, because it can be changed into a prime (126360701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9025760 + ... + 9025773.

It is an arithmetic number, because the mean of its divisors is an integer number (36103068).

Almost surely, 2^126360731 is an apocalyptic number.

126360731 is a deficient number, since it is larger than the sum of its proper divisors (18051541).

126360731 is an equidigital number, since it uses as much as digits as its factorization.

126360731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18051540.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 126360731 is about 11241.0289119813. The cubic root of 126360731 is about 501.8077641009.

The spelling of 126360731 in words is "one hundred twenty-six million, three hundred sixty thousand, seven hundred thirty-one".