1243152373 has 2 divisors, whose sum is σ = 1243152374. Its totient is φ = 1243152372.

The previous prime is 1243152343. The next prime is 1243152401. The reversal of 1243152373 is 3732513421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1233273924 + 9878449 = 35118^2 + 3143^2 .

It is a cyclic number.

It is not a de Polignac number, because 1243152373 - 2²⁵ = 1209597941 is a prime.

It is a super-2 number, since 2×1243152373² = 3090855644991062258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1243152343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621576186 + 621576187.

It is an arithmetic number, because the mean of its divisors is an integer number (621576187).

Almost surely, 2^1243152373 is an apocalyptic number.

It is an amenable number.

1243152373 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243152373 is an equidigital number, since it uses as much as digits as its factorization.

1243152373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 31.

The square root of 1243152373 is about 35258.3660001424. The cubic root of 1243152373 is about 1075.2467068175.

Adding to 1243152373 its reverse (3732513421), we get a palindrome (4975665794).

The spelling of 1243152373 in words is "one billion, two hundred forty-three million, one hundred fifty-two thousand, three hundred seventy-three".