42378330 has 32 divisors (see below), whose sum is σ = 102763584. Its totient is φ = 11183616.

The previous prime is 42378319. The next prime is 42378353. The reversal of 42378330 is 3387324.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4372 + ... + 10191.

It is an arithmetic number, because the mean of its divisors is an integer number (3211362).

Almost surely, 2^42378330 is an apocalyptic number.

42378330 is an abundant number, since it is smaller than the sum of its proper divisors (60385254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42378330 is a wasteful number, since it uses less digits than its factorization.

42378330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14670.

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 42378330 is about 6509.8640538801. The cubic root of 42378330 is about 348.6432645709.

The spelling of 42378330 in words is "forty-two million, three hundred seventy-eight thousand, three hundred thirty".