616043121 has 4 divisors (see below), whose sum is σ = 821390832. Its totient is φ = 410695412.

The previous prime is 616043111. The next prime is 616043167. The reversal of 616043121 is 121340616.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 616043121 - 2¹¹ = 616041073 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 616043091 and 616043100.

It is not an unprimeable number, because it can be changed into a prime (616043111) 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, 102673851 + ... + 102673856.

It is an arithmetic number, because the mean of its divisors is an integer number (205347708).

Almost surely, 2^616043121 is an apocalyptic number.

It is an amenable number.

616043121 is a deficient number, since it is larger than the sum of its proper divisors (205347711).

616043121 is a wasteful number, since it uses less digits than its factorization.

616043121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205347710.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 616043121 is about 24820.2159740805. The cubic root of 616043121 is about 850.8840265175.

Adding to 616043121 its reverse (121340616), we get a palindrome (737383737).

The spelling of 616043121 in words is "six hundred sixteen million, forty-three thousand, one hundred twenty-one".