42041431 has 2 divisors, whose sum is σ = 42041432. Its totient is φ = 42041430.

The previous prime is 42041411. The next prime is 42041497. The reversal of 42041431 is 13414024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42041431 - 2⁵ = 42041399 is a prime.

It is a super-2 number, since 2×42041431² = 3534963841055522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42041399 and 42041408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42041411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21020715 + 21020716.

It is an arithmetic number, because the mean of its divisors is an integer number (21020716).

Almost surely, 2^42041431 is an apocalyptic number.

42041431 is a deficient number, since it is larger than the sum of its proper divisors (1).

42041431 is an equidigital number, since it uses as much as digits as its factorization.

42041431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 42041431 is about 6483.9363815509. The cubic root of 42041431 is about 347.7169247514.

Adding to 42041431 its reverse (13414024), we get a palindrome (55455455).

The spelling of 42041431 in words is "forty-two million, forty-one thousand, four hundred thirty-one".