259421022 has 128 divisors (see below), whose sum is σ = 711244800. Its totient is φ = 68428800.

The previous prime is 259420957. The next prime is 259421039. The reversal of 259421022 is 220124952.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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 63 ways as a sum of consecutive naturals, for example, 294022 + ... + 294902.

It is an arithmetic number, because the mean of its divisors is an integer number (5556600).

Almost surely, 2^259421022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 259421022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (355622400).

259421022 is an abundant number, since it is smaller than the sum of its proper divisors (451823778).

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

259421022 is a wasteful number, since it uses less digits than its factorization.

259421022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959 (or 953 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 259421022 is about 16106.5521450123. The cubic root of 259421022 is about 637.7763175860.

Adding to 259421022 its reverse (220124952), we get a palindrome (479545974).

The spelling of 259421022 in words is "two hundred fifty-nine million, four hundred twenty-one thousand, twenty-two".