1243214065 has 8 divisors (see below), whose sum is σ = 1526551488. Its totient is φ = 971441520.

The previous prime is 1243214059. The next prime is 1243214081. The reversal of 1243214065 is 5604123421.

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

It is not a de Polignac number, because 1243214065 - 2²¹ = 1241116913 is a prime.

It is a super-2 number, since 2×1243214065² = 3091162422827648450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2890981 + ... + 2891410.

It is an arithmetic number, because the mean of its divisors is an integer number (190818936).

Almost surely, 2^1243214065 is an apocalyptic number.

It is an amenable number.

1243214065 is a deficient number, since it is larger than the sum of its proper divisors (283337423).

1243214065 is an equidigital number, since it uses as much as digits as its factorization.

1243214065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5782439.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 1243214065 is about 35259.2408454862. The cubic root of 1243214065 is about 1075.2644930583.

Adding to 1243214065 its reverse (5604123421), we get a palindrome (6847337486).

The spelling of 1243214065 in words is "one billion, two hundred forty-three million, two hundred fourteen thousand, sixty-five".