616331242 has 4 divisors (see below), whose sum is σ = 924496866. Its totient is φ = 308165620.

The previous prime is 616331227. The next prime is 616331249. The reversal of 616331242 is 242133616.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 424813321 + 191517921 = 20611^2 + 13839^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 616331242.

It is not an unprimeable number, because it can be changed into a prime (616331249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154082809 + ... + 154082812.

Almost surely, 2^616331242 is an apocalyptic number.

616331242 is a deficient number, since it is larger than the sum of its proper divisors (308165624).

616331242 is a wasteful number, since it uses less digits than its factorization.

616331242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308165623.

The product of its digits is 5184, while the sum is 28.

The square root of 616331242 is about 24826.0194554020. The cubic root of 616331242 is about 851.0166575723.

Adding to 616331242 its reverse (242133616), we get a palindrome (858464858).

The spelling of 616331242 in words is "six hundred sixteen million, three hundred thirty-one thousand, two hundred forty-two".