42332891 has 2 divisors, whose sum is σ = 42332892. Its totient is φ = 42332890.

The previous prime is 42332879. The next prime is 42332909. The reversal of 42332891 is 19823324.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42332891 - 2¹⁴ = 42316507 is a prime.

It is not a weakly prime, because it can be changed into another prime (42332831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21166445 + 21166446.

It is an arithmetic number, because the mean of its divisors is an integer number (21166446).

Almost surely, 2^42332891 is an apocalyptic number.

42332891 is a deficient number, since it is larger than the sum of its proper divisors (1).

42332891 is an equidigital number, since it uses as much as digits as its factorization.

42332891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 32.

The square root of 42332891 is about 6506.3731064242. The cubic root of 42332891 is about 348.5186122881.

The spelling of 42332891 in words is "forty-two million, three hundred thirty-two thousand, eight hundred ninety-one".