2520621426 has 8 divisors (see below), whose sum is σ = 5041242864. Its totient is φ = 840207140.

The previous prime is 2520621419. The next prime is 2520621463. The reversal of 2520621426 is 6241260252.

It is a happy number.

2520621426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

2520621426 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2520621393 and 2520621402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210051780 + ... + 210051791.

It is an arithmetic number, because the mean of its divisors is an integer number (630155358).

Almost surely, 2^2520621426 is an apocalyptic number.

2520621426 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2520621426 is a wasteful number, since it uses less digits than its factorization.

2520621426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420103576.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 2520621426 is about 50205.7907616243. The cubic root of 2520621426 is about 1360.9302721916.

Adding to 2520621426 its reverse (6241260252), we get a palindrome (8761881678).

The spelling of 2520621426 in words is "two billion, five hundred twenty million, six hundred twenty-one thousand, four hundred twenty-six".