42799511 has 2 divisors, whose sum is σ = 42799512. Its totient is φ = 42799510.

The previous prime is 42799507. The next prime is 42799513. The reversal of 42799511 is 11599724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42799511 - 2² = 42799507 is a prime.

Together with 42799513, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42799513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21399755 + 21399756.

It is an arithmetic number, because the mean of its divisors is an integer number (21399756).

Almost surely, 2^42799511 is an apocalyptic number.

42799511 is a deficient number, since it is larger than the sum of its proper divisors (1).

42799511 is an equidigital number, since it uses as much as digits as its factorization.

42799511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 38.

The square root of 42799511 is about 6542.1335204962. The cubic root of 42799511 is about 349.7944670822.

The spelling of 42799511 in words is "forty-two million, seven hundred ninety-nine thousand, five hundred eleven".