1202620100 has 72 divisors (see below), whose sum is σ = 2858442048. Its totient is φ = 435548800.

The previous prime is 1202620099. The next prime is 1202620109. The reversal of 1202620100 is 10262021.

It is not an unprimeable number, because it can be changed into a prime (1202620109) 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, 287222 + ... + 291378.

It is an arithmetic number, because the mean of its divisors is an integer number (39700584).

Almost surely, 2^1202620100 is an apocalyptic number.

1202620100 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 1202620100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1429221024).

1202620100 is an abundant number, since it is smaller than the sum of its proper divisors (1655821948).

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

1202620100 is a wasteful number, since it uses less digits than its factorization.

1202620100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4445 (or 4438 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1202620100 is about 34678.8134168400. The cubic root of 1202620100 is about 1063.4314157835.

Adding to 1202620100 its reverse (10262021), we get a palindrome (1212882121).

The spelling of 1202620100 in words is "one billion, two hundred two million, six hundred twenty thousand, one hundred".