42724330 has 16 divisors (see below), whose sum is σ = 83895264. Its totient is φ = 15536080.

The previous prime is 42724303. The next prime is 42724373. The reversal of 42724330 is 3342724.

It is a junction number, because it is equal to n+sod(n) for n = 42724295 and 42724304.

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, 194092 + ... + 194311.

It is an arithmetic number, because the mean of its divisors is an integer number (5243454).

Almost surely, 2^42724330 is an apocalyptic number.

42724330 is a deficient number, since it is larger than the sum of its proper divisors (41170934).

42724330 is a wasteful number, since it uses less digits than its factorization.

42724330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388421.

The product of its (nonzero) digits is 4032, while the sum is 25.

The square root of 42724330 is about 6536.3850865750. The cubic root of 42724330 is about 349.5895324118.

The spelling of 42724330 in words is "forty-two million, seven hundred twenty-four thousand, three hundred thirty".