42946091 has 2 divisors, whose sum is σ = 42946092. Its totient is φ = 42946090.

The previous prime is 42946069. The next prime is 42946103. The reversal of 42946091 is 19064924.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42946091 - 2⁶ = 42946027 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42946021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21473045 + 21473046.

It is an arithmetic number, because the mean of its divisors is an integer number (21473046).

Almost surely, 2^42946091 is an apocalyptic number.

42946091 is a deficient number, since it is larger than the sum of its proper divisors (1).

42946091 is an equidigital number, since it uses as much as digits as its factorization.

42946091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 42946091 is about 6553.3267124416. The cubic root of 42946091 is about 350.1933380794.

The spelling of 42946091 in words is "forty-two million, nine hundred forty-six thousand, ninety-one".