42461231 has 2 divisors, whose sum is σ = 42461232. Its totient is φ = 42461230.

The previous prime is 42461213. The next prime is 42461239. The reversal of 42461231 is 13216424.

Together with previous prime (42461213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42461231 is a prime.

It is a super-2 number, since 2×42461231² = 3605912276070722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 42461197 and 42461206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42461239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21230615 + 21230616.

It is an arithmetic number, because the mean of its divisors is an integer number (21230616).

Almost surely, 2^42461231 is an apocalyptic number.

42461231 is a deficient number, since it is larger than the sum of its proper divisors (1).

42461231 is an equidigital number, since it uses as much as digits as its factorization.

42461231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 23.

The square root of 42461231 is about 6516.2282802247. The cubic root of 42461231 is about 348.8704565423.

Adding to 42461231 its reverse (13216424), we get a palindrome (55677655).

The spelling of 42461231 in words is "forty-two million, four hundred sixty-one thousand, two hundred thirty-one".