42044331 has 16 divisors (see below), whose sum is σ = 64399104. Its totient is φ = 23901024.

The previous prime is 42044323. The next prime is 42044333. The reversal of 42044331 is 13344024.

It is not a de Polignac number, because 42044331 - 2³ = 42044323 is a prime.

It is a super-2 number, since 2×42044331² = 3535451538475122, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 42044298 and 42044307.

It is not an unprimeable number, because it can be changed into a prime (42044333) 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, 945 + ... + 9218.

It is an arithmetic number, because the mean of its divisors is an integer number (4024944).

Almost surely, 2^42044331 is an apocalyptic number.

42044331 is a deficient number, since it is larger than the sum of its proper divisors (22354773).

42044331 is a wasteful number, since it uses less digits than its factorization.

42044331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10370.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 42044331 is about 6484.1600072793. The cubic root of 42044331 is about 347.7249196894.

Adding to 42044331 its reverse (13344024), we get a palindrome (55388355).

The spelling of 42044331 in words is "forty-two million, forty-four thousand, three hundred thirty-one".