2421138258 has 96 divisors (see below), whose sum is σ = 6562288512. Its totient is φ = 626745600.

The previous prime is 2421138257. The next prime is 2421138299. The reversal of 2421138258 is 8528311242.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2421138257) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 431028 + ... + 436608.

It is an arithmetic number, because the mean of its divisors is an integer number (68357172).

Almost surely, 2^2421138258 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2421138258, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3281144256).

2421138258 is an abundant number, since it is smaller than the sum of its proper divisors (4141150254).

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

2421138258 is a wasteful number, since it uses less digits than its factorization.

2421138258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5920 (or 5917 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 2421138258 is about 49205.0633370185. The cubic root of 2421138258 is about 1342.7851512926.

The spelling of 2421138258 in words is "two billion, four hundred twenty-one million, one hundred thirty-eight thousand, two hundred fifty-eight".