42220353 has 16 divisors (see below), whose sum is σ = 65219456. Its totient is φ = 23794560.

The previous prime is 42220349. The next prime is 42220361. The reversal of 42220353 is 35302224.

It is not a de Polignac number, because 42220353 - 2² = 42220349 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42220393) 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, 12238 + ... + 15303.

It is an arithmetic number, because the mean of its divisors is an integer number (4076216).

Almost surely, 2^42220353 is an apocalyptic number.

It is an amenable number.

42220353 is a deficient number, since it is larger than the sum of its proper divisors (22999103).

42220353 is a wasteful number, since it uses less digits than its factorization.

42220353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27624.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 42220353 is about 6497.7190613322. The cubic root of 42220353 is about 348.2095035887.

Adding to 42220353 its reverse (35302224), we get a palindrome (77522577).

The spelling of 42220353 in words is "forty-two million, two hundred twenty thousand, three hundred fifty-three".