2120435451 has 6 divisors (see below), whose sum is σ = 3062851220. Its totient is φ = 1413623628.

The previous prime is 2120435431. The next prime is 2120435509. The reversal of 2120435451 is 1545340212.

2120435451 is a `hidden beast` number, since 2 + 1 + 204 + 3 + 5 + 451 = 666.

It is not a de Polignac number, because 2120435451 - 2⁷ = 2120435323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120435431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117801961 + ... + 117801978.

Almost surely, 2^2120435451 is an apocalyptic number.

2120435451 is a deficient number, since it is larger than the sum of its proper divisors (942415769).

2120435451 is a wasteful number, since it uses less digits than its factorization.

2120435451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235603945 (or 235603942 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 2120435451 is about 46048.1861857772. The cubic root of 2120435451 is about 1284.7196067446.

Adding to 2120435451 its reverse (1545340212), we get a palindrome (3665775663).

The spelling of 2120435451 in words is "two billion, one hundred twenty million, four hundred thirty-five thousand, four hundred fifty-one".