2123634 has 8 divisors (see below), whose sum is σ = 4247280. Its totient is φ = 707876.

The previous prime is 2123617. The next prime is 2123663. The reversal of 2123634 is 4363212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

2123634 is an admirable number.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 2123634.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176964 + ... + 176975.

It is an arithmetic number, because the mean of its divisors is an integer number (530910).

2^2123634 is an apocalyptic number.

2123634 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2123634 is a wasteful number, since it uses less digits than its factorization.

2123634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353944.

The product of its digits is 864, while the sum is 21.

The square root of 2123634 is about 1457.2693642563. The cubic root of 2123634 is about 128.5365256228.

Adding to 2123634 its reverse (4363212), we get a palindrome (6486846).

The spelling of 2123634 in words is "two million, one hundred twenty-three thousand, six hundred thirty-four".