42724274 has 16 divisors (see below), whose sum is σ = 67608000. Its totient is φ = 20193264.

The previous prime is 42724273. The next prime is 42724289. The reversal of 42724274 is 47242724.

It is a self number, because there is not a number n which added to its sum of digits gives 42724274.

It is not an unprimeable number, because it can be changed into a prime (42724273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21824 + ... + 23700.

It is an arithmetic number, because the mean of its divisors is an integer number (4225500).

Almost surely, 2^42724274 is an apocalyptic number.

42724274 is a deficient number, since it is larger than the sum of its proper divisors (24883726).

42724274 is a wasteful number, since it uses less digits than its factorization.

42724274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2497.

The product of its digits is 25088, while the sum is 32.

The square root of 42724274 is about 6536.3808028602. The cubic root of 42724274 is about 349.5893796727.

Adding to 42724274 its reverse (47242724), we get a palindrome (89966998).

The spelling of 42724274 in words is "forty-two million, seven hundred twenty-four thousand, two hundred seventy-four".