2403616121 has 2 divisors, whose sum is σ = 2403616122. Its totient is φ = 2403616120.

The previous prime is 2403616067. The next prime is 2403616133. The reversal of 2403616121 is 1216163042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1976780521 + 426835600 = 44461^2 + 20660^2 .

It is a cyclic number.

It is not a de Polignac number, because 2403616121 - 2³⁰ = 1329874297 is a prime.

It is not a weakly prime, because it can be changed into another prime (2403616141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1201808060 + 1201808061.

It is an arithmetic number, because the mean of its divisors is an integer number (1201808061).

Almost surely, 2^2403616121 is an apocalyptic number.

It is an amenable number.

2403616121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2403616121 is an equidigital number, since it uses as much as digits as its factorization.

2403616121 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2403616121 is about 49026.6878444792. The cubic root of 2403616121 is about 1339.5379934338.

Adding to 2403616121 its reverse (1216163042), we get a palindrome (3619779163).

The spelling of 2403616121 in words is "two billion, four hundred three million, six hundred sixteen thousand, one hundred twenty-one".