42422919 has 32 divisors (see below), whose sum is σ = 71245824. Its totient is φ = 21811680.

The previous prime is 42422917. The next prime is 42422927. The reversal of 42422919 is 91922424.

It is not a de Polignac number, because 42422919 - 2¹ = 42422917 is a prime.

It is a super-2 number, since 2×42422919² = 3599408112961122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a self number, because there is not a number n which added to its sum of digits gives 42422919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42422917) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22902 + ... + 24684.

It is an arithmetic number, because the mean of its divisors is an integer number (2226432).

Almost surely, 2^42422919 is an apocalyptic number.

42422919 is a deficient number, since it is larger than the sum of its proper divisors (28822905).

42422919 is a wasteful number, since it uses less digits than its factorization.

42422919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1907.

The product of its digits is 10368, while the sum is 33.

The square root of 42422919 is about 6513.2878794047. The cubic root of 42422919 is about 348.7654984698.

The spelling of 42422919 in words is "forty-two million, four hundred twenty-two thousand, nine hundred nineteen".