265187142 has 64 divisors (see below), whose sum is σ = 676742400. Its totient is φ = 76127040.

The previous prime is 265187129. The next prime is 265187183. The reversal of 265187142 is 241781562.

It is a junction number, because it is equal to n+sod(n) for n = 265187097 and 265187106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 463 + ... + 23034.

It is an arithmetic number, because the mean of its divisors is an integer number (10574100).

Almost surely, 2^265187142 is an apocalyptic number.

265187142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 265187142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (338371200).

265187142 is an abundant number, since it is smaller than the sum of its proper divisors (411555258).

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

265187142 is a wasteful number, since it uses less digits than its factorization.

265187142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23538 (or 23532 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 265187142 is about 16284.5676024879. The cubic root of 265187142 is about 642.4669936160.

The spelling of 265187142 in words is "two hundred sixty-five million, one hundred eighty-seven thousand, one hundred forty-two".