161420160 has 128 divisors (see below), whose sum is σ = 561375360. Its totient is φ = 39127040.

The previous prime is 161420153. The next prime is 161420173. The reversal of 161420160 is 61024161.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17299 + ... + 24941.

It is an arithmetic number, because the mean of its divisors is an integer number (4385745).

Almost surely, 2^161420160 is an apocalyptic number.

161420160 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 161420160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280687680).

161420160 is an abundant number, since it is smaller than the sum of its proper divisors (399955200).

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

161420160 is a wasteful number, since it uses less digits than its factorization.

161420160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7676 (or 7664 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 161420160 is about 12705.1233760243. The cubic root of 161420160 is about 544.4850057553.

The spelling of 161420160 in words is "one hundred sixty-one million, four hundred twenty thousand, one hundred sixty".