32420291 has 2 divisors, whose sum is σ = 32420292. Its totient is φ = 32420290.

The previous prime is 32420287. The next prime is 32420329. The reversal of 32420291 is 19202423.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 32420291 - 2² = 32420287 is a prime.

It is not a weakly prime, because it can be changed into another prime (32420261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16210145 + 16210146.

It is an arithmetic number, because the mean of its divisors is an integer number (16210146).

Almost surely, 2^32420291 is an apocalyptic number.

32420291 is a deficient number, since it is larger than the sum of its proper divisors (1).

32420291 is an equidigital number, since it uses as much as digits as its factorization.

32420291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 32420291 is about 5693.8818919960. The cubic root of 32420291 is about 318.8641074996.

The spelling of 32420291 in words is "thirty-two million, four hundred twenty thousand, two hundred ninety-one".