2106042500 has 30 divisors (see below), whose sum is σ = 4605499206. Its totient is φ = 842416000.

The previous prime is 2106042473. The next prime is 2106042527. The reversal of 2106042500 is 52406012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2106042473) and next prime (2106042527).

It can be written as a sum of positive squares in 5 ways, for example, as 488233216 + 1617809284 = 22096^2 + 40222^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 418709 + ... + 423708.

Almost surely, 2^2106042500 is an apocalyptic number.

2106042500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2106042500 is an abundant number, since it is smaller than the sum of its proper divisors (2499456706).

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

2106042500 is an equidigital number, since it uses as much as digits as its factorization.

2106042500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842441 (or 842424 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2106042500 is about 45891.6386719847. The cubic root of 2106042500 is about 1281.8062268632.

Adding to 2106042500 its reverse (52406012), we get a palindrome (2158448512).

The spelling of 2106042500 in words is "two billion, one hundred six million, forty-two thousand, five hundred".