1243122141023 has 16 divisors (see below), whose sum is σ = 1446166053120. Its totient is φ = 1046476368000.

The previous prime is 1243122141013. The next prime is 1243122141133. The reversal of 1243122141023 is 3201412213421.

It is a happy number.

It is not a de Polignac number, because 1243122141023 - 2⁴ = 1243122141007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1243122140983 and 1243122141001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243122141013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 997898 + ... + 1866023.

It is an arithmetic number, because the mean of its divisors is an integer number (90385378320).

Almost surely, 2^{1243122141023} is an apocalyptic number.

1243122141023 is a deficient number, since it is larger than the sum of its proper divisors (203043912097).

1243122141023 is a wasteful number, since it uses less digits than its factorization.

1243122141023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2865038.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 1243122141023 its reverse (3201412213421), we get a palindrome (4444534354444).

The spelling of 1243122141023 in words is "one trillion, two hundred forty-three billion, one hundred twenty-two million, one hundred forty-one thousand, twenty-three".