42214431 has 12 divisors (see below), whose sum is σ = 65475672. Its totient is φ = 24122448.

The previous prime is 42214423. The next prime is 42214457. The reversal of 42214431 is 13441224.

It is not a de Polignac number, because 42214431 - 2³ = 42214423 is a prime.

It is a super-2 number, since 2×42214431² = 3564116369307522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 42214398 and 42214407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42214411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 143440 + ... + 143733.

It is an arithmetic number, because the mean of its divisors is an integer number (5456306).

Almost surely, 2^42214431 is an apocalyptic number.

42214431 is a deficient number, since it is larger than the sum of its proper divisors (23261241).

42214431 is a wasteful number, since it uses less digits than its factorization.

42214431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287190 (or 287183 counting only the distinct ones).

The product of its digits is 768, while the sum is 21.

The square root of 42214431 is about 6497.2633469792. The cubic root of 42214431 is about 348.1932223961.

Adding to 42214431 its reverse (13441224), we get a palindrome (55655655).

The spelling of 42214431 in words is "forty-two million, two hundred fourteen thousand, four hundred thirty-one".