2125520442 has 24 divisors (see below), whose sum is σ = 4717620180. Its totient is φ = 691225920.

The previous prime is 2125520429. The next prime is 2125520471. The reversal of 2125520442 is 2440255212.

2125520442 is a `hidden beast` number, since 212 + 5 + 5 + 2 + 0 + 442 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2092239081 + 33281361 = 45741^2 + 5769^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1439317 + ... + 1440792.

Almost surely, 2^2125520442 is an apocalyptic number.

2125520442 is an abundant number, since it is smaller than the sum of its proper divisors (2592099738).

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

2125520442 is a wasteful number, since it uses less digits than its factorization.

2125520442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2880158 (or 2880155 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 2125520442 is about 46103.3669269393. The cubic root of 2125520442 is about 1285.7457438546.

Adding to 2125520442 its reverse (2440255212), we get a palindrome (4565775654).

The spelling of 2125520442 in words is "two billion, one hundred twenty-five million, five hundred twenty thousand, four hundred forty-two".