42421311 has 6 divisors (see below), whose sum is σ = 61275240. Its totient is φ = 28280868.

The previous prime is 42421289. The next prime is 42421321. The reversal of 42421311 is 11312424.

It is not a de Polignac number, because 42421311 - 2⁵ = 42421279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42421321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2356731 + ... + 2356748.

It is an arithmetic number, because the mean of its divisors is an integer number (10212540).

Almost surely, 2^42421311 is an apocalyptic number.

42421311 is a deficient number, since it is larger than the sum of its proper divisors (18853929).

42421311 is a wasteful number, since it uses less digits than its factorization.

42421311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4713485 (or 4713482 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 42421311 is about 6513.1644382742. The cubic root of 42421311 is about 348.7610918737.

Adding to 42421311 its reverse (11312424), we get a palindrome (53733735).

The spelling of 42421311 in words is "forty-two million, four hundred twenty-one thousand, three hundred eleven".