126426815 has 4 divisors (see below), whose sum is σ = 151712184. Its totient is φ = 101141448.

The previous prime is 126426799. The next prime is 126426827. The reversal of 126426815 is 518624621.

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 126426815 - 2⁴ = 126426799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12642677 + ... + 12642686.

It is an arithmetic number, because the mean of its divisors is an integer number (37928046).

Almost surely, 2^126426815 is an apocalyptic number.

126426815 is a deficient number, since it is larger than the sum of its proper divisors (25285369).

126426815 is an equidigital number, since it uses as much as digits as its factorization.

126426815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25285368.

The product of its digits is 23040, while the sum is 35.

The square root of 126426815 is about 11243.9679384104. The cubic root of 126426815 is about 501.8952271515.

The spelling of 126426815 in words is "one hundred twenty-six million, four hundred twenty-six thousand, eight hundred fifteen".