42391126 has 4 divisors (see below), whose sum is σ = 63586692. Its totient is φ = 21195562.

The previous prime is 42391123. The next prime is 42391169. The reversal of 42391126 is 62119324.

42391126 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 42391094 and 42391103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42391121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10597780 + ... + 10597783.

It is an arithmetic number, because the mean of its divisors is an integer number (15896673).

Almost surely, 2^42391126 is an apocalyptic number.

42391126 is a deficient number, since it is larger than the sum of its proper divisors (21195566).

42391126 is a wasteful number, since it uses less digits than its factorization.

42391126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21195565.

The product of its digits is 2592, while the sum is 28.

The square root of 42391126 is about 6510.8467959245. The cubic root of 42391126 is about 348.6783516093.

The spelling of 42391126 in words is "forty-two million, three hundred ninety-one thousand, one hundred twenty-six".