42295391 has 2 divisors, whose sum is σ = 42295392. Its totient is φ = 42295390.

The previous prime is 42295361. The next prime is 42295399. The reversal of 42295391 is 19359224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42295391 - 2⁶ = 42295327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42295399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21147695 + 21147696.

It is an arithmetic number, because the mean of its divisors is an integer number (21147696).

Almost surely, 2^42295391 is an apocalyptic number.

42295391 is a deficient number, since it is larger than the sum of its proper divisors (1).

42295391 is an equidigital number, since it uses as much as digits as its factorization.

42295391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 35.

The square root of 42295391 is about 6503.4906780897. The cubic root of 42295391 is about 348.4156717717.

The spelling of 42295391 in words is "forty-two million, two hundred ninety-five thousand, three hundred ninety-one".