2120135424 has 72 divisors (see below), whose sum is σ = 6155644992. Its totient is φ = 642462720.

The previous prime is 2120135389. The next prime is 2120135491. The reversal of 2120135424 is 4245310212.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 2120135394 and 2120135403.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117034 + ... + 133929.

Almost surely, 2^2120135424 is an apocalyptic number.

2120135424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2120135424 is an abundant number, since it is smaller than the sum of its proper divisors (4035509568).

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

2120135424 is a wasteful number, since it uses less digits than its factorization.

2120135424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250993 (or 250979 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 2120135424 is about 46044.9283200658. The cubic root of 2120135424 is about 1284.6590108970.

Adding to 2120135424 its reverse (4245310212), we get a palindrome (6365445636).

The spelling of 2120135424 in words is "two billion, one hundred twenty million, one hundred thirty-five thousand, four hundred twenty-four".