42298639 has 2 divisors, whose sum is σ = 42298640. Its totient is φ = 42298638.

The previous prime is 42298631. The next prime is 42298643. The reversal of 42298639 is 93689224.

42298639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42298639 - 2³ = 42298631 is a prime.

It is a super-2 number, since 2×42298639² = 3578349722504642, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42298595 and 42298604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42298631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21149319 + 21149320.

It is an arithmetic number, because the mean of its divisors is an integer number (21149320).

Almost surely, 2^42298639 is an apocalyptic number.

42298639 is a deficient number, since it is larger than the sum of its proper divisors (1).

42298639 is an equidigital number, since it uses as much as digits as its factorization.

42298639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 43.

The square root of 42298639 is about 6503.7403853475. The cubic root of 42298639 is about 348.4245901992.

The spelling of 42298639 in words is "forty-two million, two hundred ninety-eight thousand, six hundred thirty-nine".