42399263 has 4 divisors (see below), whose sum is σ = 42669480. Its totient is φ = 42129048.

The previous prime is 42399257. The next prime is 42399277. The reversal of 42399263 is 36299324.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42399263 - 2¹⁶ = 42333727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42399223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134873 + ... + 135186.

It is an arithmetic number, because the mean of its divisors is an integer number (10667370).

Almost surely, 2^42399263 is an apocalyptic number.

42399263 is a deficient number, since it is larger than the sum of its proper divisors (270217).

42399263 is a wasteful number, since it uses less digits than its factorization.

42399263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270216.

The product of its digits is 69984, while the sum is 38.

The square root of 42399263 is about 6511.4716462563. The cubic root of 42399263 is about 348.7006598492.

The spelling of 42399263 in words is "forty-two million, three hundred ninety-nine thousand, two hundred sixty-three".