1243300421 has 8 divisors (see below), whose sum is σ = 1357471488. Its totient is φ = 1129320000.

The previous prime is 1243300417. The next prime is 1243300453. The reversal of 1243300421 is 1240033421.

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 1243300421 - 2² = 1243300417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1243300393 and 1243300402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243308421) 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, 33845 + ... + 60266.

It is an arithmetic number, because the mean of its divisors is an integer number (169683936).

Almost surely, 2^1243300421 is an apocalyptic number.

1243300421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1243300421 is a deficient number, since it is larger than the sum of its proper divisors (114171067).

1243300421 is a wasteful number, since it uses less digits than its factorization.

1243300421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95323.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1243300421 is about 35260.4654109954. The cubic root of 1243300421 is about 1075.2893891169.

Adding to 1243300421 its reverse (1240033421), we get a palindrome (2483333842).

The spelling of 1243300421 in words is "one billion, two hundred forty-three million, three hundred thousand, four hundred twenty-one".