126368815 has 4 divisors (see below), whose sum is σ = 151642584. Its totient is φ = 101095048.

The previous prime is 126368813. The next prime is 126368821. The reversal of 126368815 is 518863621.

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 126368815 - 2¹ = 126368813 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126368813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12636877 + ... + 12636886.

It is an arithmetic number, because the mean of its divisors is an integer number (37910646).

Almost surely, 2^126368815 is an apocalyptic number.

126368815 is a deficient number, since it is larger than the sum of its proper divisors (25273769).

126368815 is an equidigital number, since it uses as much as digits as its factorization.

126368815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25273768.

The product of its digits is 69120, while the sum is 40.

The square root of 126368815 is about 11241.3884818558. The cubic root of 126368815 is about 501.8184650188.

The spelling of 126368815 in words is "one hundred twenty-six million, three hundred sixty-eight thousand, eight hundred fifteen".