3405120023 has 2 divisors, whose sum is σ = 3405120024. Its totient is φ = 3405120022.

The previous prime is 3405119947. The next prime is 3405120049. The reversal of 3405120023 is 3200215043.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (3200215043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3405120023 - 2¹⁰ = 3405118999 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3405119977 and 3405120004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3405120623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1702560011 + 1702560012.

It is an arithmetic number, because the mean of its divisors is an integer number (1702560012).

Almost surely, 2^3405120023 is an apocalyptic number.

3405120023 is a deficient number, since it is larger than the sum of its proper divisors (1).

3405120023 is an equidigital number, since it uses as much as digits as its factorization.

3405120023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 3405120023 is about 58353.4062673294. The cubic root of 3405120023 is about 1504.4490167499.

Adding to 3405120023 its reverse (3200215043), we get a palindrome (6605335066).

The spelling of 3405120023 in words is "three billion, four hundred five million, one hundred twenty thousand, twenty-three".