42724052 has 12 divisors (see below), whose sum is σ = 85448160. Its totient is φ = 18310296.

The previous prime is 42724051. The next prime is 42724079. The reversal of 42724052 is 25042724.

42724052 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42724051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 762902 + ... + 762957.

It is an arithmetic number, because the mean of its divisors is an integer number (7120680).

Almost surely, 2^42724052 is an apocalyptic number.

It is an amenable number.

42724052 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42724052 is a wasteful number, since it uses less digits than its factorization.

42724052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1525870 (or 1525868 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 42724052 is about 6536.3638209635. The cubic root of 42724052 is about 349.5887741701.

Adding to 42724052 its reverse (25042724), we get a palindrome (67766776).

The spelling of 42724052 in words is "forty-two million, seven hundred twenty-four thousand, fifty-two".