1243234419 has 12 divisors (see below), whose sum is σ = 1928282184. Its totient is φ = 710419584.

The previous prime is 1243234403. The next prime is 1243234423. The reversal of 1243234419 is 9144323421.

It is not a de Polignac number, because 1243234419 - 2⁴ = 1243234403 is a prime.

It is a super-2 number, since 2×1243234419² = 3091263641172535122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1243234419.

It is not an unprimeable number, because it can be changed into a prime (1243234219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4228542 + ... + 4228835.

It is an arithmetic number, because the mean of its divisors is an integer number (160690182).

Almost surely, 2^1243234419 is an apocalyptic number.

1243234419 is a deficient number, since it is larger than the sum of its proper divisors (685047765).

1243234419 is an equidigital number, since it uses as much as digits as its factorization.

1243234419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8457394 (or 8457387 counting only the distinct ones).

The product of its digits is 20736, while the sum is 33.

The square root of 1243234419 is about 35259.5294778589. The cubic root of 1243234419 is about 1075.2703611317.

The spelling of 1243234419 in words is "one billion, two hundred forty-three million, two hundred thirty-four thousand, four hundred nineteen".