42144322 has 16 divisors (see below), whose sum is σ = 69937344. Its totient is φ = 18886000.

The previous prime is 42144307. The next prime is 42144331. The reversal of 42144322 is 22344124.

It is a happy number.

It is a super-2 number, since 2×42144322² = 3552287753679368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 42144293 and 42144302.

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, 11929 + ... + 15052.

It is an arithmetic number, because the mean of its divisors is an integer number (4371084).

Almost surely, 2^42144322 is an apocalyptic number.

42144322 is a deficient number, since it is larger than the sum of its proper divisors (27793022).

42144322 is a wasteful number, since it uses less digits than its factorization.

42144322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27065.

The product of its digits is 1536, while the sum is 22.

The square root of 42144322 is about 6491.8658334873. The cubic root of 42144322 is about 348.0003578188. Note that the first 3 decimals are identical.

Adding to 42144322 its reverse (22344124), we get a palindrome (64488446).

The spelling of 42144322 in words is "forty-two million, one hundred forty-four thousand, three hundred twenty-two".