42420111 has 8 divisors (see below), whose sum is σ = 56685744. Its totient is φ = 28217280.

The previous prime is 42420109. The next prime is 42420181. The reversal of 42420111 is 11102424.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42420111 - 2¹ = 42420109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42420181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14100 + ... + 16841.

It is an arithmetic number, because the mean of its divisors is an integer number (7085718).

Almost surely, 2^42420111 is an apocalyptic number.

42420111 is a deficient number, since it is larger than the sum of its proper divisors (14265633).

42420111 is a wasteful number, since it uses less digits than its factorization.

42420111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31401.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 42420111 is about 6513.0723165032. The cubic root of 42420111 is about 348.7578032966.

Adding to 42420111 its reverse (11102424), we get a palindrome (53522535).

The spelling of 42420111 in words is "forty-two million, four hundred twenty thousand, one hundred eleven".