2120524040 has 16 divisors (see below), whose sum is σ = 4771179180. Its totient is φ = 848209600.

The previous prime is 2120524039. The next prime is 2120524061. The reversal of 2120524040 is 404250212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1971537604 + 148986436 = 44402^2 + 12206^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 26506511 + ... + 26506590.

Almost surely, 2^2120524040 is an apocalyptic number.

2120524040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120524040 is an abundant number, since it is smaller than the sum of its proper divisors (2650655140).

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

2120524040 is a wasteful number, since it uses less digits than its factorization.

2120524040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53013112 (or 53013108 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 2120524040 is about 46049.1480920114. The cubic root of 2120524040 is about 1284.7374977931.

Adding to 2120524040 its reverse (404250212), we get a palindrome (2524774252).

The spelling of 2120524040 in words is "two billion, one hundred twenty million, five hundred twenty-four thousand, forty".