1100402100 has 432 divisors, whose sum is σ = 4305974400. Its totient is φ = 229340160.

The previous prime is 1100402063. The next prime is 1100402123. The reversal of 1100402100 is 12040011.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3471142 + ... + 3471458.

Almost surely, 2^1100402100 is an apocalyptic number.

1100402100 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 1100402100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2152987200).

1100402100 is an abundant number, since it is smaller than the sum of its proper divisors (3205572300).

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

1100402100 is a wasteful number, since it uses less digits than its factorization.

1100402100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392 (or 382 counting only the distinct ones).

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

The square root of 1100402100 is about 33172.3092352643. The cubic root of 1100402100 is about 1032.4058819012.

Adding to 1100402100 its reverse (12040011), we get a palindrome (1112442111).

The spelling of 1100402100 in words is "one billion, one hundred million, four hundred two thousand, one hundred".