126000815 has 4 divisors (see below), whose sum is σ = 151200984. Its totient is φ = 100800648.

The previous prime is 126000811. The next prime is 126000817. The reversal of 126000815 is 518000621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 518000621 = 22511 ⋅23011.

It is a cyclic number.

It is not a de Polignac number, because 126000815 - 2² = 126000811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126000811) 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, 12600077 + ... + 12600086.

It is an arithmetic number, because the mean of its divisors is an integer number (37800246).

Almost surely, 2^126000815 is an apocalyptic number.

126000815 is a deficient number, since it is larger than the sum of its proper divisors (25200169).

126000815 is an equidigital number, since it uses as much as digits as its factorization.

126000815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25200168.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 126000815 is about 11225.0084632485. The cubic root of 126000815 is about 501.3308744036.

The spelling of 126000815 in words is "one hundred twenty-six million, eight hundred fifteen", and thus it is an aban number.