126038391 has 24 divisors (see below), whose sum is σ = 183389520. Its totient is φ = 76925952.

The previous prime is 126038347. The next prime is 126038401. The reversal of 126038391 is 193830621.

It is not a de Polignac number, because 126038391 - 2¹⁵ = 126005623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126038291) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30115 + ... + 34043.

It is an arithmetic number, because the mean of its divisors is an integer number (7641230).

Almost surely, 2^126038391 is an apocalyptic number.

126038391 is a deficient number, since it is larger than the sum of its proper divisors (57351129).

126038391 is a wasteful number, since it uses less digits than its factorization.

126038391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4003 (or 3986 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 126038391 is about 11226.6821011375. The cubic root of 126038391 is about 501.3807051305.

The spelling of 126038391 in words is "one hundred twenty-six million, thirty-eight thousand, three hundred ninety-one".