42013726 has 4 divisors (see below), whose sum is σ = 63020592. Its totient is φ = 21006862.

The previous prime is 42013717. The next prime is 42013729. The reversal of 42013726 is 62731024.

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

It is a self number, because there is not a number n which added to its sum of digits gives 42013726.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42013729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10503430 + ... + 10503433.

It is an arithmetic number, because the mean of its divisors is an integer number (15755148).

Almost surely, 2^42013726 is an apocalyptic number.

42013726 is a deficient number, since it is larger than the sum of its proper divisors (21006866).

42013726 is a wasteful number, since it uses less digits than its factorization.

42013726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21006865.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 42013726 is about 6481.7995957913. The cubic root of 42013726 is about 347.6405269848.

The spelling of 42013726 in words is "forty-two million, thirteen thousand, seven hundred twenty-six".