42724518 has 16 divisors (see below), whose sum is σ = 85522800. Its totient is φ = 14229216.

The previous prime is 42724481. The next prime is 42724531. The reversal of 42724518 is 81542724.

It is a Curzon number.

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, 6996 + ... + 11592.

It is an arithmetic number, because the mean of its divisors is an integer number (5345175).

Almost surely, 2^42724518 is an apocalyptic number.

42724518 is an abundant number, since it is smaller than the sum of its proper divisors (42798282).

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

42724518 is a wasteful number, since it uses less digits than its factorization.

42724518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6151.

The product of its digits is 17920, while the sum is 33.

The square root of 42724518 is about 6536.3994675968. The cubic root of 42724518 is about 349.5900451777.

The spelling of 42724518 in words is "forty-two million, seven hundred twenty-four thousand, five hundred eighteen".