1213299426 has 16 divisors (see below), whose sum is σ = 2472384384. Its totient is φ = 396802224.

The previous prime is 1213299403. The next prime is 1213299443. The reversal of 1213299426 is 6249923121.

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, 1907386 + ... + 1908021.

It is an arithmetic number, because the mean of its divisors is an integer number (154524024).

Almost surely, 2^1213299426 is an apocalyptic number.

1213299426 is an abundant number, since it is smaller than the sum of its proper divisors (1259084958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213299426 is a wasteful number, since it uses less digits than its factorization.

1213299426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3815465.

The product of its digits is 46656, while the sum is 39.

The square root of 1213299426 is about 34832.4478898627. The cubic root of 1213299426 is about 1066.5699185471.

The spelling of 1213299426 in words is "one billion, two hundred thirteen million, two hundred ninety-nine thousand, four hundred twenty-six".