2251405242 has 48 divisors (see below), whose sum is σ = 4925007360. Its totient is φ = 743280000.

The previous prime is 2251405213. The next prime is 2251405271. The reversal of 2251405242 is 2425041522.

2251405242 is a `hidden beast` number, since 2 + 251 + 405 + 2 + 4 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (2251405213) and next prime (2251405271).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 861634 + ... + 864242.

It is an arithmetic number, because the mean of its divisors is an integer number (102604320).

Almost surely, 2^2251405242 is an apocalyptic number.

2251405242 is an abundant number, since it is smaller than the sum of its proper divisors (2673602118).

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

2251405242 is a wasteful number, since it uses less digits than its factorization.

2251405242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3059 (or 3056 counting only the distinct ones).

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

The square root of 2251405242 is about 47448.9751417246. The cubic root of 2251405242 is about 1310.6434385451.

Adding to 2251405242 its reverse (2425041522), we get a palindrome (4676446764).

The spelling of 2251405242 in words is "two billion, two hundred fifty-one million, four hundred five thousand, two hundred forty-two".