161201124 has 48 divisors (see below), whose sum is σ = 477635200. Its totient is φ = 46057248.

The previous prime is 161201113. The next prime is 161201141. The reversal of 161201124 is 421102161.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 161201097 and 161201106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105859 + ... + 107370.

Almost surely, 2^161201124 is an apocalyptic number.

161201124 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

161201124 is an abundant number, since it is smaller than the sum of its proper divisors (316434076).

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

161201124 is a wasteful number, since it uses less digits than its factorization.

161201124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213249 (or 213241 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 161201124 is about 12696.5004627259. The cubic root of 161201124 is about 544.2386181051.

Adding to 161201124 its reverse (421102161), we get a palindrome (582303285).

The spelling of 161201124 in words is "one hundred sixty-one million, two hundred one thousand, one hundred twenty-four".