42421841 has 16 divisors (see below), whose sum is σ = 53222400. Its totient is φ = 32848080.

The previous prime is 42421837. The next prime is 42421933. The reversal of 42421841 is 14812424.

It is a cyclic number.

It is not a de Polignac number, because 42421841 - 2² = 42421837 is a prime.

It is a super-2 number, since 2×42421841² = 3599225187658562, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42421841.

It is not an unprimeable number, because it can be changed into a prime (42421801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11210 + ... + 14508.

It is an arithmetic number, because the mean of its divisors is an integer number (3326400).

Almost surely, 2^42421841 is an apocalyptic number.

It is an amenable number.

42421841 is a deficient number, since it is larger than the sum of its proper divisors (10800559).

42421841 is a wasteful number, since it uses less digits than its factorization.

42421841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3484.

The product of its digits is 2048, while the sum is 26.

The square root of 42421841 is about 6513.2051249750. The cubic root of 42421841 is about 348.7625443088.

The spelling of 42421841 in words is "forty-two million, four hundred twenty-one thousand, eight hundred forty-one".