42220045 has 16 divisors (see below), whose sum is σ = 58186368. Its totient is φ = 28808640.

The previous prime is 42219979. The next prime is 42220081. The reversal of 42220045 is 54002224.

It is not a de Polignac number, because 42220045 - 2⁷ = 42219917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4527 + ... + 10243.

It is an arithmetic number, because the mean of its divisors is an integer number (3636648).

Almost surely, 2^42220045 is an apocalyptic number.

It is an amenable number.

42220045 is a deficient number, since it is larger than the sum of its proper divisors (15966323).

42220045 is a wasteful number, since it uses less digits than its factorization.

42220045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5940.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 42220045 is about 6497.6953606644. The cubic root of 42220045 is about 348.2086568502.

Adding to 42220045 its reverse (54002224), we get a palindrome (96222269).

The spelling of 42220045 in words is "forty-two million, two hundred twenty thousand, forty-five".