616421123 has 4 divisors (see below), whose sum is σ = 648864360. Its totient is φ = 583977888.

The previous prime is 616421087. The next prime is 616421131. The reversal of 616421123 is 321124616.

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

It is a cyclic number.

It is not a de Polignac number, because 616421123 - 2¹⁴ = 616404739 is a prime.

It is a super-2 number, since 2×616421123² = 759950001761162258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 616421092 and 616421101.

It is not an unprimeable number, because it can be changed into a prime (616421023) 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, 16221590 + ... + 16221627.

It is an arithmetic number, because the mean of its divisors is an integer number (162216090).

Almost surely, 2^616421123 is an apocalyptic number.

616421123 is a deficient number, since it is larger than the sum of its proper divisors (32443237).

616421123 is a wasteful number, since it uses less digits than its factorization.

616421123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32443236.

The product of its digits is 1728, while the sum is 26.

The square root of 616421123 is about 24827.8296071163. The cubic root of 616421123 is about 851.0580241325.

Adding to 616421123 its reverse (321124616), we get a palindrome (937545739).

The spelling of 616421123 in words is "six hundred sixteen million, four hundred twenty-one thousand, one hundred twenty-three".