165041240 has 64 divisors (see below), whose sum is σ = 457047360. Its totient is φ = 52231680.

The previous prime is 165041221. The next prime is 165041251. The reversal of 165041240 is 42140561.

It is a super-2 number, since 2×165041240² = 54477221801475200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19031 + ... + 26310.

It is an arithmetic number, because the mean of its divisors is an integer number (7141365).

Almost surely, 2^165041240 is an apocalyptic number.

165041240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165041240 is an abundant number, since it is smaller than the sum of its proper divisors (292006120).

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

165041240 is a wasteful number, since it uses less digits than its factorization.

165041240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45372 (or 45368 counting only the distinct ones).

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

The square root of 165041240 is about 12846.8377431958. The cubic root of 165041240 is about 548.5263470776.

The spelling of 165041240 in words is "one hundred sixty-five million, forty-one thousand, two hundred forty".