42220402 has 16 divisors (see below), whose sum is σ = 72547200. Its totient is φ = 18052128.

The previous prime is 42220393. The next prime is 42220463. The reversal of 42220402 is 20402224.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3099 + ... + 9697.

It is an arithmetic number, because the mean of its divisors is an integer number (4534200).

Almost surely, 2^42220402 is an apocalyptic number.

42220402 is a deficient number, since it is larger than the sum of its proper divisors (30326798).

42220402 is a wasteful number, since it uses less digits than its factorization.

42220402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7065.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 42220402 is about 6497.7228318850. The cubic root of 42220402 is about 348.2096382967.

Adding to 42220402 its reverse (20402224), we get a palindrome (62622626).

The spelling of 42220402 in words is "forty-two million, two hundred twenty thousand, four hundred two".