2123630642 has 8 divisors (see below), whose sum is σ = 3640509696. Its totient is φ = 910127412.

The previous prime is 2123630611. The next prime is 2123630669. The reversal of 2123630642 is 2460363212.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75843938 + ... + 75843965.

It is an arithmetic number, because the mean of its divisors is an integer number (455063712).

Almost surely, 2^2123630642 is an apocalyptic number.

2123630642 is a deficient number, since it is larger than the sum of its proper divisors (1516879054).

2123630642 is a wasteful number, since it uses less digits than its factorization.

2123630642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151687912.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 2123630642 is about 46082.8671200046. The cubic root of 2123630642 is about 1285.3645787328.

Adding to 2123630642 its reverse (2460363212), we get a palindrome (4583993854).

The spelling of 2123630642 in words is "two billion, one hundred twenty-three million, six hundred thirty thousand, six hundred forty-two".