1243230323421 has 8 divisors (see below), whose sum is σ = 1657773935584. Its totient is φ = 828753463440.

The previous prime is 1243230323417. The next prime is 1243230323431.

It is a happy number.

1243230323421 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 1243230323421 - 2² = 1243230323417 is a prime.

It is a super-2 number, since 2×1243230323421² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243230323431) 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, 16644571 + ... + 16719096.

It is an arithmetic number, because the mean of its divisors is an integer number (207221741948).

Almost surely, 2^{1243230323421} is an apocalyptic number.

It is an amenable number.

1243230323421 is a deficient number, since it is larger than the sum of its proper divisors (414543612163).

1243230323421 is a wasteful number, since it uses less digits than its factorization.

1243230323421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33376091.

The product of its (nonzero) digits is 20736, while the sum is 30.

It can be divided in two parts, 1243230 and 323421, that added together give a palindrome (1566651).

The spelling of 1243230323421 in words is "one trillion, two hundred forty-three billion, two hundred thirty million, three hundred twenty-three thousand, four hundred twenty-one".