42461491 has 2 divisors, whose sum is σ = 42461492. Its totient is φ = 42461490.

The previous prime is 42461453. The next prime is 42461501. The reversal of 42461491 is 19416424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42461491 - 2¹⁵ = 42428723 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42461591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21230745 + 21230746.

It is an arithmetic number, because the mean of its divisors is an integer number (21230746).

Almost surely, 2^42461491 is an apocalyptic number.

42461491 is a deficient number, since it is larger than the sum of its proper divisors (1).

42461491 is an equidigital number, since it uses as much as digits as its factorization.

42461491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 31.

The square root of 42461491 is about 6516.2482303853. The cubic root of 42461491 is about 348.8711686125.

The spelling of 42461491 in words is "forty-two million, four hundred sixty-one thousand, four hundred ninety-one".