305124042043 has 4 divisors (see below), whose sum is σ = 305127343080. Its totient is φ = 305120741008.

The previous prime is 305124042007. The next prime is 305124042061. The reversal of 305124042043 is 340240421503.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 340240421503 = 104471 ⋅3256793.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-305124042043 is a prime.

It is a super-2 number, since 2×305124042043² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (305121042043) 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, 1507753 + ... + 1698106.

It is an arithmetic number, because the mean of its divisors is an integer number (76281835770).

Almost surely, 2^305124042043 is an apocalyptic number.

305124042043 is a deficient number, since it is larger than the sum of its proper divisors (3301037).

305124042043 is an equidigital number, since it uses as much as digits as its factorization.

305124042043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3301036.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 305124042043 its reverse (340240421503), we get a palindrome (645364463546).

The spelling of 305124042043 in words is "three hundred five billion, one hundred twenty-four million, forty-two thousand, forty-three".