265421120 has 56 divisors (see below), whose sum is σ = 635191008. Its totient is φ = 105638400.

The previous prime is 265421087. The next prime is 265421159. The reversal of 265421120 is 21124562.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65555 + ... + 69485.

Almost surely, 2^265421120 is an apocalyptic number.

265421120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265421120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317595504).

265421120 is an abundant number, since it is smaller than the sum of its proper divisors (369769888).

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

265421120 is a wasteful number, since it uses less digits than its factorization.

265421120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4159 (or 4149 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 265421120 is about 16291.7500594626. The cubic root of 265421120 is about 642.6558903477.

Adding to 265421120 its reverse (21124562), we get a palindrome (286545682).

The spelling of 265421120 in words is "two hundred sixty-five million, four hundred twenty-one thousand, one hundred twenty".