1204243100 has 72 divisors (see below), whose sum is σ = 2669360400. Its totient is φ = 471424000.

The previous prime is 1204243087. The next prime is 1204243109. The reversal of 1204243100 is 13424021.

It is a super-2 number, since 2×1204243100² = 2900402887795220000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204243109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2365646 + ... + 2366154.

It is an arithmetic number, because the mean of its divisors is an integer number (37074450).

Almost surely, 2^1204243100 is an apocalyptic number.

1204243100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1204243100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1334680200).

1204243100 is an abundant number, since it is smaller than the sum of its proper divisors (1465117300).

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

1204243100 is a wasteful number, since it uses less digits than its factorization.

1204243100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983 (or 976 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1204243100 is about 34702.2059817528. The cubic root of 1204243100 is about 1063.9095865567.

Adding to 1204243100 its reverse (13424021), we get a palindrome (1217667121).

The spelling of 1204243100 in words is "one billion, two hundred four million, two hundred forty-three thousand, one hundred".