162421040 has 80 divisors (see below), whose sum is σ = 389412576. Its totient is φ = 62976000.

The previous prime is 162421031. The next prime is 162421069. The reversal of 162421040 is 40124261.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 404840 + ... + 405240.

Almost surely, 2^162421040 is an apocalyptic number.

162421040 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 162421040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194706288).

162421040 is an abundant number, since it is smaller than the sum of its proper divisors (226991536).

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

162421040 is a wasteful number, since it uses less digits than its factorization.

162421040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558 (or 552 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 162421040 is about 12744.4513416624. The cubic root of 162421040 is about 545.6080411780.

The spelling of 162421040 in words is "one hundred sixty-two million, four hundred twenty-one thousand, forty".