2120636234 has 4 divisors (see below), whose sum is σ = 3180954354. Its totient is φ = 1060318116.

The previous prime is 2120636207. The next prime is 2120636239. The reversal of 2120636234 is 4326360212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2120142025 + 494209 = 46045^2 + 703^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2120636197 and 2120636206.

It is not an unprimeable number, because it can be changed into a prime (2120636239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530159057 + ... + 530159060.

Almost surely, 2^2120636234 is an apocalyptic number.

2120636234 is a deficient number, since it is larger than the sum of its proper divisors (1060318120).

2120636234 is a wasteful number, since it uses less digits than its factorization.

2120636234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060318119.

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

The square root of 2120636234 is about 46050.3662743305. The cubic root of 2120636234 is about 1284.7601552894.

Adding to 2120636234 its reverse (4326360212), we get a palindrome (6446996446).

The spelling of 2120636234 in words is "two billion, one hundred twenty million, six hundred thirty-six thousand, two hundred thirty-four".