42023378 has 16 divisors (see below), whose sum is σ = 65401560. Its totient is φ = 20227200.

The previous prime is 42023363. The next prime is 42023381. The reversal of 42023378 is 87332024.

It can be written as a sum of positive squares in 4 ways, for example, as 28058209 + 13965169 = 5297^2 + 3737^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a self number, because there is not a number n which added to its sum of digits gives 42023378.

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 7 ways as a sum of consecutive naturals, for example, 23558 + ... + 25278.

Almost surely, 2^42023378 is an apocalyptic number.

42023378 is a deficient number, since it is larger than the sum of its proper divisors (23378182).

42023378 is a wasteful number, since it uses less digits than its factorization.

42023378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2173.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 42023378 is about 6482.5440993487. The cubic root of 42023378 is about 347.6671466142.

The spelling of 42023378 in words is "forty-two million, twenty-three thousand, three hundred seventy-eight".