42295447 has 2 divisors, whose sum is σ = 42295448. Its totient is φ = 42295446.

The previous prime is 42295433. The next prime is 42295453. The reversal of 42295447 is 74459224.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42295447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42295147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21147723 + 21147724.

It is an arithmetic number, because the mean of its divisors is an integer number (21147724).

Almost surely, 2^42295447 is an apocalyptic number.

42295447 is a deficient number, since it is larger than the sum of its proper divisors (1).

42295447 is an equidigital number, since it uses as much as digits as its factorization.

42295447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 37.

The square root of 42295447 is about 6503.4949834685. The cubic root of 42295447 is about 348.4158255415.

The spelling of 42295447 in words is "forty-two million, two hundred ninety-five thousand, four hundred forty-seven".