305121042043 has 2 divisors, whose sum is σ = 305121042044. Its totient is φ = 305121042042.

The previous prime is 305121041993. The next prime is 305121042059. The reversal of 305121042043 is 340240121503.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 305121042043 - 2⁹ = 305121041531 is a prime.

It is a super-2 number, since 2×305121042043² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 305121041999 and 305121042017.

It is not a weakly prime, because it can be changed into another prime (305121042143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152560521021 + 152560521022.

It is an arithmetic number, because the mean of its divisors is an integer number (152560521022).

Almost surely, 2^305121042043 is an apocalyptic number.

305121042043 is a deficient number, since it is larger than the sum of its proper divisors (1).

305121042043 is an equidigital number, since it uses as much as digits as its factorization.

305121042043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 305121042043 its reverse (340240121503), we get a palindrome (645361163546).

The spelling of 305121042043 in words is "three hundred five billion, one hundred twenty-one million, forty-two thousand, forty-three".