42370078 has 4 divisors (see below), whose sum is σ = 63555120. Its totient is φ = 21185038.

The previous prime is 42370067. The next prime is 42370123. The reversal of 42370078 is 87007324.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10592518 + ... + 10592521.

It is an arithmetic number, because the mean of its divisors is an integer number (15888780).

Almost surely, 2^42370078 is an apocalyptic number.

42370078 is a deficient number, since it is larger than the sum of its proper divisors (21185042).

42370078 is a wasteful number, since it uses less digits than its factorization.

42370078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21185041.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 42370078 is about 6509.2302156246. The cubic root of 42370078 is about 348.6206335786.

The spelling of 42370078 in words is "forty-two million, three hundred seventy thousand, seventy-eight".