1243049880 has 32 divisors (see below), whose sum is σ = 3729150000. Its totient is φ = 331479936.

The previous prime is 1243049879. The next prime is 1243049897. The reversal of 1243049880 is 889403421.

It is a congruent number.

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, 5179255 + ... + 5179494.

Almost surely, 2^1243049880 is an apocalyptic number.

1243049880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1243049880 is an abundant number, since it is smaller than the sum of its proper divisors (2486100120).

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

1243049880 is a wasteful number, since it uses less digits than its factorization.

1243049880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10358763 (or 10358759 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 1243049880 is about 35256.9125137185. The cubic root of 1243049880 is about 1075.2171560582.

The spelling of 1243049880 in words is "one billion, two hundred forty-three million, forty-nine thousand, eight hundred eighty".