2520011421 has 12 divisors (see below), whose sum is σ = 3757436800. Its totient is φ = 1625813640.

The previous prime is 2520011383. The next prime is 2520011447. The reversal of 2520011421 is 1241100252.

2520011421 is a `hidden beast` number, since 2 + 520 + 0 + 1 + 142 + 1 = 666.

It is not a de Polignac number, because 2520011421 - 2⁶ = 2520011357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2520011394 and 2520011403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520011621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4515871 + ... + 4516428.

Almost surely, 2^2520011421 is an apocalyptic number.

It is an amenable number.

2520011421 is a deficient number, since it is larger than the sum of its proper divisors (1237425379).

2520011421 is a wasteful number, since it uses less digits than its factorization.

2520011421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9032336 (or 9032333 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 2520011421 is about 50199.7153477985. The cubic root of 2520011421 is about 1360.8204789954.

Adding to 2520011421 its reverse (1241100252), we get a palindrome (3761111673).

The spelling of 2520011421 in words is "two billion, five hundred twenty million, eleven thousand, four hundred twenty-one".