42093278 has 4 divisors (see below), whose sum is σ = 63139920. Its totient is φ = 21046638.

The previous prime is 42093277. The next prime is 42093281. The reversal of 42093278 is 87239024.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42093277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10523318 + ... + 10523321.

It is an arithmetic number, because the mean of its divisors is an integer number (15784980).

Almost surely, 2^42093278 is an apocalyptic number.

42093278 is a deficient number, since it is larger than the sum of its proper divisors (21046642).

42093278 is a wasteful number, since it uses less digits than its factorization.

42093278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21046641.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 42093278 is about 6487.9332610624. The cubic root of 42093278 is about 347.8598050252.

The spelling of 42093278 in words is "forty-two million, ninety-three thousand, two hundred seventy-eight".