2106421470 has 64 divisors (see below), whose sum is σ = 5768965440. Its totient is φ = 546528384.

The previous prime is 2106421469. The next prime is 2106421501. The reversal of 2106421470 is 741246012.

2106421470 is a `hidden beast` number, since 2 + 1 + 0 + 642 + 14 + 7 + 0 = 666.

It is a super-2 number, since 2×2106421470² = 8874022818553921800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95437 + ... + 115416.

It is an arithmetic number, because the mean of its divisors is an integer number (90140085).

Almost surely, 2^2106421470 is an apocalyptic number.

2106421470 is an abundant number, since it is smaller than the sum of its proper divisors (3662543970).

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

2106421470 is a wasteful number, since it uses less digits than its factorization.

2106421470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210906 (or 210900 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 2106421470 is about 45895.7674519122. The cubic root of 2106421470 is about 1281.8831067571.

Adding to 2106421470 its reverse (741246012), we get a palindrome (2847667482).

The spelling of 2106421470 in words is "two billion, one hundred six million, four hundred twenty-one thousand, four hundred seventy".