42310291 has 2 divisors, whose sum is σ = 42310292. Its totient is φ = 42310290.

The previous prime is 42310273. The next prime is 42310313. The reversal of 42310291 is 19201324.

It is an a-pointer prime, because the next prime (42310313) can be obtained adding 42310291 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42310291 - 2⁵ = 42310259 is a prime.

It is not a weakly prime, because it can be changed into another prime (42310211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21155145 + 21155146.

It is an arithmetic number, because the mean of its divisors is an integer number (21155146).

Almost surely, 2^42310291 is an apocalyptic number.

42310291 is a deficient number, since it is larger than the sum of its proper divisors (1).

42310291 is an equidigital number, since it uses as much as digits as its factorization.

42310291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 42310291 is about 6504.6361158792. The cubic root of 42310291 is about 348.4565807524.

The spelling of 42310291 in words is "forty-two million, three hundred ten thousand, two hundred ninety-one".