616320042 has 16 divisors (see below), whose sum is σ = 1327458720. Its totient is φ = 189636912.

The previous prime is 616320037. The next prime is 616320049. The reversal of 616320042 is 240023616.

It is a junction number, because it is equal to n+sod(n) for n = 616319994 and 616320021.

It is not an unprimeable number, because it can be changed into a prime (616320049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3950692 + ... + 3950847.

It is an arithmetic number, because the mean of its divisors is an integer number (82966170).

Almost surely, 2^616320042 is an apocalyptic number.

616320042 is an abundant number, since it is smaller than the sum of its proper divisors (711138678).

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

616320042 is a wasteful number, since it uses less digits than its factorization.

616320042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7901557.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 616320042 is about 24825.7938845871. The cubic root of 616320042 is about 851.0115026363.

Adding to 616320042 its reverse (240023616), we get a palindrome (856343658).

The spelling of 616320042 in words is "six hundred sixteen million, three hundred twenty thousand, forty-two".