161739124 has 6 divisors (see below), whose sum is σ = 283043474. Its totient is φ = 80869560.

The previous prime is 161739113. The next prime is 161739133. The reversal of 161739124 is 421937161.

It can be written as a sum of positive squares in only one way, i.e., 139948900 + 21790224 = 11830^2 + 4668^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 161739124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20217387 + ... + 20217394.

Almost surely, 2^161739124 is an apocalyptic number.

It is an amenable number.

161739124 is a deficient number, since it is larger than the sum of its proper divisors (121304350).

161739124 is a wasteful number, since it uses less digits than its factorization.

161739124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40434785 (or 40434783 counting only the distinct ones).

The product of its digits is 9072, while the sum is 34.

The square root of 161739124 is about 12717.6697551084. The cubic root of 161739124 is about 544.8434014068.

The spelling of 161739124 in words is "one hundred sixty-one million, seven hundred thirty-nine thousand, one hundred twenty-four".