2123605146 has 32 divisors (see below), whose sum is σ = 4576255488. Its totient is φ = 653083200.

The previous prime is 2123605123. The next prime is 2123605151. The reversal of 2123605146 is 6415063212.

It is a super-2 number, since 2×2123605146² = 9019397632235362632, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 178071 + ... + 189621.

It is an arithmetic number, because the mean of its divisors is an integer number (143007984).

Almost surely, 2^2123605146 is an apocalyptic number.

2123605146 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2123605146 is an abundant number, since it is smaller than the sum of its proper divisors (2452650342).

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

2123605146 is a wasteful number, since it uses less digits than its factorization.

2123605146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13926.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 2123605146 is about 46082.5904870809. The cubic root of 2123605146 is about 1285.3594347456.

Adding to 2123605146 its reverse (6415063212), we get a palindrome (8538668358).

The spelling of 2123605146 in words is "two billion, one hundred twenty-three million, six hundred five thousand, one hundred forty-six".