1243121432983 has 2 divisors, whose sum is σ = 1243121432984. Its totient is φ = 1243121432982.

The previous prime is 1243121432951. The next prime is 1243121433041. The reversal of 1243121432983 is 3892341213421.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1243121432983 - 2⁵ = 1243121432951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1243121432933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621560716491 + 621560716492.

It is an arithmetic number, because the mean of its divisors is an integer number (621560716492).

Almost surely, 2^{1243121432983} is an apocalyptic number.

1243121432983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243121432983 is an equidigital number, since it uses as much as digits as its factorization.

1243121432983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 43.

The spelling of 1243121432983 in words is "one trillion, two hundred forty-three billion, one hundred twenty-one million, four hundred thirty-two thousand, nine hundred eighty-three".