1243234123 has 8 divisors (see below), whose sum is σ = 1317306240. Its totient is φ = 1169266560.

The previous prime is 1243234121. The next prime is 1243234133. The reversal of 1243234123 is 3214323421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1243234123 - 2¹ = 1243234121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1243234121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 948 + ... + 49873.

It is an arithmetic number, because the mean of its divisors is an integer number (164663280).

Almost surely, 2^1243234123 is an apocalyptic number.

1243234123 is a deficient number, since it is larger than the sum of its proper divisors (74072117).

1243234123 is a wasteful number, since it uses less digits than its factorization.

1243234123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52277.

The product of its digits is 3456, while the sum is 25.

The square root of 1243234123 is about 35259.5252804118. The cubic root of 1243234123 is about 1075.2702757951.

Adding to 1243234123 its reverse (3214323421), we get a palindrome (4457557544).

The spelling of 1243234123 in words is "one billion, two hundred forty-three million, two hundred thirty-four thousand, one hundred twenty-three".