1204100100 has 144 divisors (see below), whose sum is σ = 4424022400. Its totient is φ = 275218560.

The previous prime is 1204100069. The next prime is 1204100101. The reversal of 1204100100 is 10014021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1204100101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12955 + ... + 50754.

Almost surely, 2^1204100100 is an apocalyptic number.

1204100100 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 1204100100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2212011200).

1204100100 is an abundant number, since it is smaller than the sum of its proper divisors (3219922300).

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

1204100100 is a wasteful number, since it uses less digits than its factorization.

1204100100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63739 (or 63726 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1204100100 is about 34700.1455328360. The cubic root of 1204100100 is about 1063.8674729410.

Adding to 1204100100 its reverse (10014021), we get a palindrome (1214114121).

The spelling of 1204100100 in words is "one billion, two hundred four million, one hundred thousand, one hundred".