165254140 has 24 divisors (see below), whose sum is σ = 347375952. Its totient is φ = 66036480.

The previous prime is 165254107. The next prime is 165254143. The reversal of 165254140 is 41452561.

It is a junction number, because it is equal to n+sod(n) for n = 165254099 and 165254108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165254143) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 20260 + ... + 27220.

It is an arithmetic number, because the mean of its divisors is an integer number (14473998).

Almost surely, 2^165254140 is an apocalyptic number.

165254140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165254140 is an abundant number, since it is smaller than the sum of its proper divisors (182121812).

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

165254140 is a wasteful number, since it uses less digits than its factorization.

165254140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8157 (or 8155 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 165254140 is about 12855.1211585111. The cubic root of 165254140 is about 548.7621085153.

The spelling of 165254140 in words is "one hundred sixty-five million, two hundred fifty-four thousand, one hundred forty".