1253340043 has 2 divisors, whose sum is σ = 1253340044. Its totient is φ = 1253340042.

The previous prime is 1253340037. The next prime is 1253340059. The reversal of 1253340043 is 3400433521.

It is a weak prime.

It is an emirp because it is prime and its reverse (3400433521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1253340043 - 2⁹ = 1253339531 is a prime.

It is a super-2 number, since 2×1253340043² = 3141722526774483698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1253340083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626670021 + 626670022.

It is an arithmetic number, because the mean of its divisors is an integer number (626670022).

Almost surely, 2^1253340043 is an apocalyptic number.

1253340043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1253340043 is an equidigital number, since it uses as much as digits as its factorization.

1253340043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 1253340043 is about 35402.5428888943. The cubic root of 1253340043 is about 1078.1759456517.

Adding to 1253340043 its reverse (3400433521), we get a palindrome (4653773564).

The spelling of 1253340043 in words is "one billion, two hundred fifty-three million, three hundred forty thousand, forty-three".