4042431 has 12 divisors (see below), whose sum is σ = 6027840. Its totient is φ = 2607840.

The previous prime is 4042429. The next prime is 4042433. The reversal of 4042431 is 1342404.

4042431 = 346² + 347² + ... + 376².

It is an interprime number because it is at equal distance from previous prime (4042429) and next prime (4042433).

It is not a de Polignac number, because 4042431 - 2¹ = 4042429 is a prime.

It is a super-2 number, since 2×4042431² = 32682496779522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4042433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6966 + ... + 7523.

It is an arithmetic number, because the mean of its divisors is an integer number (502320).

Almost surely, 2^4042431 is an apocalyptic number.

4042431 is a deficient number, since it is larger than the sum of its proper divisors (1985409).

4042431 is a wasteful number, since it uses less digits than its factorization.

4042431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14526 (or 14523 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 4042431 is about 2010.5797671319. The cubic root of 4042431 is about 159.2994239135.

Adding to 4042431 its reverse (1342404), we get a palindrome (5384835).

The spelling of 4042431 in words is "four million, forty-two thousand, four hundred thirty-one".