1243055936 has 28 divisors (see below), whose sum is σ = 2474183520. Its totient is φ = 619639680.

The previous prime is 1243055921. The next prime is 1243055941. The reversal of 1243055936 is 6395503421.

It is a self number, because there is not a number n which added to its sum of digits gives 1243055936.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8156 + ... + 50523.

Almost surely, 2^1243055936 is an apocalyptic number.

1243055936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1243055936 is a deficient number, since it is larger than the sum of its proper divisors (1231127584).

1243055936 is an equidigital number, since it uses as much as digits as its factorization.

1243055936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59022 (or 59012 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 38.

The square root of 1243055936 is about 35256.9983974813. The cubic root of 1243055936 is about 1075.2189021679.

The spelling of 1243055936 in words is "one billion, two hundred forty-three million, fifty-five thousand, nine hundred thirty-six".