42232481 has 2 divisors, whose sum is σ = 42232482. Its totient is φ = 42232480.

The previous prime is 42232469. The next prime is 42232499. The reversal of 42232481 is 18423224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40436881 + 1795600 = 6359^2 + 1340^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42232481 is a prime.

It is a super-2 number, since 2×42232481² = 3567164902830722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42232481.

It is not a weakly prime, because it can be changed into another prime (42232441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21116240 + 21116241.

It is an arithmetic number, because the mean of its divisors is an integer number (21116241).

Almost surely, 2^42232481 is an apocalyptic number.

It is an amenable number.

42232481 is a deficient number, since it is larger than the sum of its proper divisors (1).

42232481 is an equidigital number, since it uses as much as digits as its factorization.

42232481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3072, while the sum is 26.

The square root of 42232481 is about 6498.6522448889. The cubic root of 42232481 is about 348.2428420164.

The spelling of 42232481 in words is "forty-two million, two hundred thirty-two thousand, four hundred eighty-one".