42798799 has 2 divisors, whose sum is σ = 42798800. Its totient is φ = 42798798.

The previous prime is 42798787. The next prime is 42798827. The reversal of 42798799 is 99789724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42798799 - 2¹³ = 42790607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42798709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21399399 + 21399400.

It is an arithmetic number, because the mean of its divisors is an integer number (21399400).

Almost surely, 2^42798799 is an apocalyptic number.

42798799 is a deficient number, since it is larger than the sum of its proper divisors (1).

42798799 is an equidigital number, since it uses as much as digits as its factorization.

42798799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2286144, while the sum is 55.

The square root of 42798799 is about 6542.0791037712. The cubic root of 42798799 is about 349.7925273790.

The spelling of 42798799 in words is "forty-two million, seven hundred ninety-eight thousand, seven hundred ninety-nine".