1214215243 has 2 divisors, whose sum is σ = 1214215244. Its totient is φ = 1214215242.

The previous prime is 1214215237. The next prime is 1214215253. The reversal of 1214215243 is 3425124121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1214215243 is a prime.

It is not a weakly prime, because it can be changed into another prime (1214215253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607107621 + 607107622.

It is an arithmetic number, because the mean of its divisors is an integer number (607107622).

Almost surely, 2^1214215243 is an apocalyptic number.

1214215243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1214215243 is an equidigital number, since it uses as much as digits as its factorization.

1214215243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 25.

The square root of 1214215243 is about 34845.5914428210. The cubic root of 1214215243 is about 1066.8382054958.

Adding to 1214215243 its reverse (3425124121), we get a palindrome (4639339364).

The spelling of 1214215243 in words is "one billion, two hundred fourteen million, two hundred fifteen thousand, two hundred forty-three".