1002132100 has 72 divisors (see below), whose sum is σ = 2210124168. Its totient is φ = 394368000.

The previous prime is 1002132049. The next prime is 1002132119. The reversal of 1002132100 is 12312001.

It can be written as a sum of positive squares in 12 ways, for example, as 583029316 + 419102784 = 24146^2 + 20472^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3161142 + ... + 3161458.

It is an arithmetic number, because the mean of its divisors is an integer number (30696169).

Almost surely, 2^1002132100 is an apocalyptic number.

1002132100 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 1002132100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1105062084).

1002132100 is an abundant number, since it is smaller than the sum of its proper divisors (1207992068).

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

1002132100 is a wasteful number, since it uses less digits than its factorization.

1002132100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745 (or 738 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1002132100 is about 31656.4701127589. The cubic root of 1002132100 is about 1000.7101955029.

Adding to 1002132100 its reverse (12312001), we get a palindrome (1014444101).

The spelling of 1002132100 in words is "one billion, two million, one hundred thirty-two thousand, one hundred".