1243042300 has 18 divisors (see below), whose sum is σ = 2697402008. Its totient is φ = 497216880.

The previous prime is 1243042259. The next prime is 1243042313. The reversal of 1243042300 is 32403421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6215112 + ... + 6215311.

Almost surely, 2^1243042300 is an apocalyptic number.

1243042300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1243042300 is an abundant number, since it is smaller than the sum of its proper divisors (1454359708).

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

1243042300 is a wasteful number, since it uses less digits than its factorization.

1243042300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12430437 (or 12430430 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 1243042300 is about 35256.8050169042. The cubic root of 1243042300 is about 1075.2149705297.

Adding to 1243042300 its reverse (32403421), we get a palindrome (1275445721).

The spelling of 1243042300 in words is "one billion, two hundred forty-three million, forty-two thousand, three hundred".