42702991 has 2 divisors, whose sum is σ = 42702992. Its totient is φ = 42702990.

The previous prime is 42702983. The next prime is 42703007. The reversal of 42702991 is 19920724.

It is a happy number.

42702991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42702991 - 2³ = 42702983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42702941) 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, 21351495 + 21351496.

It is an arithmetic number, because the mean of its divisors is an integer number (21351496).

Almost surely, 2^42702991 is an apocalyptic number.

42702991 is a deficient number, since it is larger than the sum of its proper divisors (1).

42702991 is an equidigital number, since it uses as much as digits as its factorization.

42702991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 42702991 is about 6534.7525584371. The cubic root of 42702991 is about 349.5313209794.

The spelling of 42702991 in words is "forty-two million, seven hundred two thousand, nine hundred ninety-one".