42079787 has 2 divisors, whose sum is σ = 42079788. Its totient is φ = 42079786.

The previous prime is 42079771. The next prime is 42079789. The reversal of 42079787 is 78797024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42079787 - 2⁴ = 42079771 is a prime.

Together with 42079789, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42079789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21039893 + 21039894.

It is an arithmetic number, because the mean of its divisors is an integer number (21039894).

Almost surely, 2^42079787 is an apocalyptic number.

42079787 is a deficient number, since it is larger than the sum of its proper divisors (1).

42079787 is an equidigital number, since it uses as much as digits as its factorization.

42079787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 197568, while the sum is 44.

The square root of 42079787 is about 6486.8934783916. The cubic root of 42079787 is about 347.8226377441.

The spelling of 42079787 in words is "forty-two million, seventy-nine thousand, seven hundred eighty-seven".