42242331 has 16 divisors (see below), whose sum is σ = 60908544. Its totient is φ = 25939584.

The previous prime is 42242311. The next prime is 42242351. The reversal of 42242331 is 13324224.

It is an interprime number because it is at equal distance from previous prime (42242311) and next prime (42242351).

It is not a de Polignac number, because 42242331 - 2⁶ = 42242267 is a prime.

It is a super-2 number, since 2×42242331² = 3568829056627122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42242298 and 42242307.

It is not an unprimeable number, because it can be changed into a prime (42242311) 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, 6415 + ... + 11208.

It is an arithmetic number, because the mean of its divisors is an integer number (3806784).

Almost surely, 2^42242331 is an apocalyptic number.

42242331 is a deficient number, since it is larger than the sum of its proper divisors (18666213).

42242331 is a wasteful number, since it uses less digits than its factorization.

42242331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17690.

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

The square root of 42242331 is about 6499.4100501507. The cubic root of 42242331 is about 348.2699137968.

Adding to 42242331 its reverse (13324224), we get a palindrome (55566555).

It can be divided in two parts, 4224 and 2331, that added together give a triangular number (6555 = T₁₁₄).

The spelling of 42242331 in words is "forty-two million, two hundred forty-two thousand, three hundred thirty-one".