163542240 has 120 divisors (see below), whose sum is σ = 577213560. Its totient is φ = 43607808.

The previous prime is 163542233. The next prime is 163542241. The reversal of 163542240 is 42245361.

163542240 is a `hidden beast` number, since 1 + 635 + 4 + 2 + 24 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-3 number, since 3×163542240³ (a number of 26 digits) contains 333 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163542241) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6651 + ... + 19269.

It is an arithmetic number, because the mean of its divisors is an integer number (4810113).

Almost surely, 2^163542240 is an apocalyptic number.

163542240 is a gapful number since it is divisible by the number (10) 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 163542240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288606780).

163542240 is an abundant number, since it is smaller than the sum of its proper divisors (413671320).

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

163542240 is a wasteful number, since it uses less digits than its factorization.

163542240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12646 (or 12629 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 163542240 is about 12788.3634605840. The cubic root of 163542240 is about 546.8606159591.

The spelling of 163542240 in words is "one hundred sixty-three million, five hundred forty-two thousand, two hundred forty".