1202126100 has 288 divisors, whose sum is σ = 4255727616. Its totient is φ = 255744000.

The previous prime is 1202126099. The next prime is 1202126147. The reversal of 1202126100 is 16212021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1202126100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5390589 + ... + 5390811.

It is an arithmetic number, because the mean of its divisors is an integer number (14776832).

Almost surely, 2^1202126100 is an apocalyptic number.

1202126100 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 1202126100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2127863808).

1202126100 is an abundant number, since it is smaller than the sum of its proper divisors (3053601516).

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

1202126100 is a wasteful number, since it uses less digits than its factorization.

1202126100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415 (or 408 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1202126100 is about 34671.6901808954. The cubic root of 1202126100 is about 1063.2857873437.

Adding to 1202126100 its reverse (16212021), we get a palindrome (1218338121).

The spelling of 1202126100 in words is "one billion, two hundred two million, one hundred twenty-six thousand, one hundred".