42220413 has 16 divisors (see below), whose sum is σ = 65841600. Its totient is φ = 26665200.

The previous prime is 42220393. The next prime is 42220463. The reversal of 42220413 is 31402224.

It is not a de Polignac number, because 42220413 - 2⁶ = 42220349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42220463) 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, 40638 + ... + 41663.

It is an arithmetic number, because the mean of its divisors is an integer number (4115100).

Almost surely, 2^42220413 is an apocalyptic number.

It is an amenable number.

42220413 is a deficient number, since it is larger than the sum of its proper divisors (23621187).

42220413 is a wasteful number, since it uses less digits than its factorization.

42220413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82329 (or 82323 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 42220413 is about 6497.7236783354. The cubic root of 42220413 is about 348.2096685373.

Adding to 42220413 its reverse (31402224), we get a palindrome (73622637).

The spelling of 42220413 in words is "forty-two million, two hundred twenty thousand, four hundred thirteen".