42580331 has 2 divisors, whose sum is σ = 42580332. Its totient is φ = 42580330.

The previous prime is 42580313. The next prime is 42580357. The reversal of 42580331 is 13308524.

Together with previous prime (42580313) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (42580357) can be obtained adding 42580331 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42580331 - 2²² = 38386027 is a prime.

It is a super-2 number, since 2×42580331² = 3626169176139122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42580331.

It is not a weakly prime, because it can be changed into another prime (42580301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21290165 + 21290166.

It is an arithmetic number, because the mean of its divisors is an integer number (21290166).

Almost surely, 2^42580331 is an apocalyptic number.

42580331 is a deficient number, since it is larger than the sum of its proper divisors (1).

42580331 is an equidigital number, since it uses as much as digits as its factorization.

42580331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 42580331 is about 6525.3606030625. The cubic root of 42580331 is about 349.1963356431.

Adding to 42580331 its reverse (13308524), we get a palindrome (55888855).

The spelling of 42580331 in words is "forty-two million, five hundred eighty thousand, three hundred thirty-one".