42461591 has 2 divisors, whose sum is σ = 42461592. Its totient is φ = 42461590.

The previous prime is 42461569. The next prime is 42461593. The reversal of 42461591 is 19516424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42461591 - 2¹⁰ = 42460567 is a prime.

Together with 42461593, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42461593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21230795 + 21230796.

It is an arithmetic number, because the mean of its divisors is an integer number (21230796).

Almost surely, 2^42461591 is an apocalyptic number.

42461591 is a deficient number, since it is larger than the sum of its proper divisors (1).

42461591 is an equidigital number, since it uses as much as digits as its factorization.

42461591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 32.

The square root of 42461591 is about 6516.2559035078. The cubic root of 42461591 is about 348.8714424849.

The spelling of 42461591 in words is "forty-two million, four hundred sixty-one thousand, five hundred ninety-one".