42993378 has 24 divisors (see below), whose sum is σ = 95320368. Its totient is φ = 13997592.

The previous prime is 42993361. The next prime is 42993383. The reversal of 42993378 is 87339924.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27000 + ... + 28547.

It is an arithmetic number, because the mean of its divisors is an integer number (3971682).

Almost surely, 2^42993378 is an apocalyptic number.

42993378 is an abundant number, since it is smaller than the sum of its proper divisors (52326990).

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

42993378 is a wasteful number, since it uses less digits than its factorization.

42993378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55598 (or 55595 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 42993378 is about 6556.9335820946. The cubic root of 42993378 is about 350.3218210054.

The spelling of 42993378 in words is "forty-two million, nine hundred ninety-three thousand, three hundred seventy-eight".