161201204 has 12 divisors (see below), whose sum is σ = 294367584. Its totient is φ = 77096184.

The previous prime is 161201197. The next prime is 161201233. The reversal of 161201204 is 402102161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 876002 + ... + 876185.

It is an arithmetic number, because the mean of its divisors is an integer number (24530632).

Almost surely, 2^161201204 is an apocalyptic number.

It is an amenable number.

161201204 is a deficient number, since it is larger than the sum of its proper divisors (133166380).

161201204 is a wasteful number, since it uses less digits than its factorization.

161201204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1752214 (or 1752212 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 161201204 is about 12696.5036132000. The cubic root of 161201204 is about 544.2387081356.

Adding to 161201204 its reverse (402102161), we get a palindrome (563303365).

The spelling of 161201204 in words is "one hundred sixty-one million, two hundred one thousand, two hundred four".