52320042 has 24 divisors (see below), whose sum is σ = 114959520. Its totient is φ = 17193960.

The previous prime is 52320029. The next prime is 52320061. The reversal of 52320042 is 24002325.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 52319997 and 52320024.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19192 + ... + 21747.

It is an arithmetic number, because the mean of its divisors is an integer number (4789980).

Almost surely, 2^52320042 is an apocalyptic number.

52320042 is an abundant number, since it is smaller than the sum of its proper divisors (62639478).

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

52320042 is a wasteful number, since it uses less digits than its factorization.

52320042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41018 (or 41015 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 52320042 is about 7233.2594312661. The cubic root of 52320042 is about 374.0152938735.

Adding to 52320042 its reverse (24002325), we get a palindrome (76322367).

The spelling of 52320042 in words is "fifty-two million, three hundred twenty thousand, forty-two".