1243034421 has 8 divisors (see below), whose sum is σ = 1662387744. Its totient is φ = 826185360.

The previous prime is 1243034383. The next prime is 1243034423. The reversal of 1243034421 is 1244303421.

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

It is not a de Polignac number, because 1243034421 - 2⁷ = 1243034293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1243034391 and 1243034400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243034423) 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, 624906 + ... + 626891.

It is an arithmetic number, because the mean of its divisors is an integer number (207798468).

Almost surely, 2^1243034421 is an apocalyptic number.

It is an amenable number.

1243034421 is a deficient number, since it is larger than the sum of its proper divisors (419353323).

1243034421 is a wasteful number, since it uses less digits than its factorization.

1243034421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252131.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1243034421 is about 35256.6932794328. The cubic root of 1243034421 is about 1075.2126987817.

Adding to 1243034421 its reverse (1244303421), we get a palindrome (2487337842).

The spelling of 1243034421 in words is "one billion, two hundred forty-three million, thirty-four thousand, four hundred twenty-one".