42398169 has 8 divisors (see below), whose sum is σ = 61670112. Its totient is φ = 25695840.

The previous prime is 42398159. The next prime is 42398207. The reversal of 42398169 is 96189324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42398169 - 2⁹ = 42397657 is a prime.

It is a super-2 number, since 2×42398169² = 3595209469105122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42398169.

It is not an unprimeable number, because it can be changed into a prime (42398149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 642364 + ... + 642429.

It is an arithmetic number, because the mean of its divisors is an integer number (7708764).

Almost surely, 2^42398169 is an apocalyptic number.

It is an amenable number.

42398169 is a deficient number, since it is larger than the sum of its proper divisors (19271943).

42398169 is a wasteful number, since it uses less digits than its factorization.

42398169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284807.

The product of its digits is 93312, while the sum is 42.

The square root of 42398169 is about 6511.3876401271. The cubic root of 42398169 is about 348.6976607263.

The spelling of 42398169 in words is "forty-two million, three hundred ninety-eight thousand, one hundred sixty-nine".