161427204 has 18 divisors (see below), whose sum is σ = 408052190. Its totient is φ = 53809056.

The previous prime is 161427197. The next prime is 161427283. The reversal of 161427204 is 402724161.

161427204 is a `hidden beast` number, since 1 + 614 + 27 + 20 + 4 = 666.

161427204 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 153809604 + 7617600 = 12402^2 + 2760^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2242009 + ... + 2242080.

Almost surely, 2^161427204 is an apocalyptic number.

It is an amenable number.

161427204 is an abundant number, since it is smaller than the sum of its proper divisors (246624986).

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

161427204 is a wasteful number, since it uses less digits than its factorization.

161427204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4484099 (or 4484094 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 161427204 is about 12705.4005840036. The cubic root of 161427204 is about 544.4929256595.

The spelling of 161427204 in words is "one hundred sixty-one million, four hundred twenty-seven thousand, two hundred four".