161660124 has 42 divisors (see below), whose sum is σ = 424171440. Its totient is φ = 53885736.

The previous prime is 161660111. The next prime is 161660131. The reversal of 161660124 is 421066161.

It is a super-2 number, since 2×161660124² = 52267991383390752, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 24804 + ... + 30635.

It is an arithmetic number, because the mean of its divisors is an integer number (10099320).

Almost surely, 2^161660124 is an apocalyptic number.

It is an amenable number.

161660124 is an abundant number, since it is smaller than the sum of its proper divisors (262511316).

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

161660124 is an equidigital number, since it uses as much as digits as its factorization.

161660124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55461 (or 55444 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 161660124 is about 12714.5634608507. The cubic root of 161660124 is about 544.7546790299.

The spelling of 161660124 in words is "one hundred sixty-one million, six hundred sixty thousand, one hundred twenty-four".