1243493275 has 12 divisors (see below), whose sum is σ = 1608972912. Its totient is φ = 951542240.

The previous prime is 1243493249. The next prime is 1243493281. The reversal of 1243493275 is 5723943421.

It is not a de Polignac number, because 1243493275 - 2⁹ = 1243492763 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1080724 + ... + 1081873.

It is an arithmetic number, because the mean of its divisors is an integer number (134081076).

Almost surely, 2^1243493275 is an apocalyptic number.

1243493275 is a deficient number, since it is larger than the sum of its proper divisors (365479637).

1243493275 is a wasteful number, since it uses less digits than its factorization.

1243493275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2162630 (or 2162625 counting only the distinct ones).

The product of its digits is 181440, while the sum is 40.

The square root of 1243493275 is about 35263.2000107761. The cubic root of 1243493275 is about 1075.3449839233.

The spelling of 1243493275 in words is "one billion, two hundred forty-three million, four hundred ninety-three thousand, two hundred seventy-five".