1243463426 has 8 divisors (see below), whose sum is σ = 1866659580. Its totient is φ = 621243568.

The previous prime is 1243463423. The next prime is 1243463447. The reversal of 1243463426 is 6243643421.

It can be written as a sum of positive squares in 2 ways, for example, as 1069355401 + 174108025 = 32701^2 + 13195^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1243463423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240881 + ... + 245988.

Almost surely, 2^1243463426 is an apocalyptic number.

1243463426 is a deficient number, since it is larger than the sum of its proper divisors (623196154).

1243463426 is a wasteful number, since it uses less digits than its factorization.

1243463426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488148.

The product of its digits is 82944, while the sum is 35.

The square root of 1243463426 is about 35262.7767766522. The cubic root of 1243463426 is about 1075.3363796068.

The spelling of 1243463426 in words is "one billion, two hundred forty-three million, four hundred sixty-three thousand, four hundred twenty-six".