42604841 has 2 divisors, whose sum is σ = 42604842. Its totient is φ = 42604840.

The previous prime is 42604829. The next prime is 42604843. The reversal of 42604841 is 14840624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38688400 + 3916441 = 6220^2 + 1979^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42604841 is a prime.

Together with 42604843, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42604843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21302420 + 21302421.

It is an arithmetic number, because the mean of its divisors is an integer number (21302421).

Almost surely, 2^42604841 is an apocalyptic number.

It is an amenable number.

42604841 is a deficient number, since it is larger than the sum of its proper divisors (1).

42604841 is an equidigital number, since it uses as much as digits as its factorization.

42604841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 42604841 is about 6527.2383900084. The cubic root of 42604841 is about 349.2633240101.

The spelling of 42604841 in words is "forty-two million, six hundred four thousand, eight hundred forty-one".