126401915 has 8 divisors (see below), whose sum is σ = 152701200. Its totient is φ = 100442272.

The previous prime is 126401881. The next prime is 126401917. The reversal of 126401915 is 519104621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 126401915 - 2²⁶ = 59293051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126401917) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 84089 + ... + 85578.

It is an arithmetic number, because the mean of its divisors is an integer number (19087650).

Almost surely, 2^126401915 is an apocalyptic number.

126401915 is a deficient number, since it is larger than the sum of its proper divisors (26299285).

126401915 is a wasteful number, since it uses less digits than its factorization.

126401915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169821.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 126401915 is about 11242.8606235246. The cubic root of 126401915 is about 501.8622752505.

The spelling of 126401915 in words is "one hundred twenty-six million, four hundred one thousand, nine hundred fifteen".