161423080 has 128 divisors (see below), whose sum is σ = 454970880. Its totient is φ = 50181120.

The previous prime is 161423023. The next prime is 161423081. The reversal of 161423080 is 80324161.

161423080 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (161423081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 221677 + ... + 222403.

It is an arithmetic number, because the mean of its divisors is an integer number (3554460).

Almost surely, 2^161423080 is an apocalyptic number.

161423080 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 161423080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227485440).

161423080 is an abundant number, since it is smaller than the sum of its proper divisors (293547800).

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

161423080 is a wasteful number, since it uses less digits than its factorization.

161423080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819 (or 815 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 161423080 is about 12705.2382897764. The cubic root of 161423080 is about 544.4882888781.

The spelling of 161423080 in words is "one hundred sixty-one million, four hundred twenty-three thousand, eighty".