42378259 has 16 divisors (see below), whose sum is σ = 55134720. Its totient is φ = 31584960.

The previous prime is 42378257. The next prime is 42378269. The reversal of 42378259 is 95287324.

It is not a de Polignac number, because 42378259 - 2¹ = 42378257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42378257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10194 + ... + 13735.

It is an arithmetic number, because the mean of its divisors is an integer number (3445920).

Almost surely, 2^42378259 is an apocalyptic number.

42378259 is a deficient number, since it is larger than the sum of its proper divisors (12756461).

42378259 is a wasteful number, since it uses less digits than its factorization.

42378259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23970.

The product of its digits is 120960, while the sum is 40.

The square root of 42378259 is about 6509.8586006149. The cubic root of 42378259 is about 348.6430698670.

The spelling of 42378259 in words is "forty-two million, three hundred seventy-eight thousand, two hundred fifty-nine".