42493278 has 16 divisors (see below), whose sum is σ = 85104000. Its totient is φ = 14144856.

The previous prime is 42493267. The next prime is 42493289. The reversal of 42493278 is 87239424.

It is an interprime number because it is at equal distance from previous prime (42493267) and next prime (42493289).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223 + ... + 9221.

It is an arithmetic number, because the mean of its divisors is an integer number (5319000).

Almost surely, 2^42493278 is an apocalyptic number.

42493278 is an abundant number, since it is smaller than the sum of its proper divisors (42610722).

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

42493278 is a wasteful number, since it uses less digits than its factorization.

42493278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9791.

The product of its digits is 96768, while the sum is 39.

The square root of 42493278 is about 6518.6868309499. The cubic root of 42493278 is about 348.9582027815.

The spelling of 42493278 in words is "forty-two million, four hundred ninety-three thousand, two hundred seventy-eight".