161241123 has 8 divisors (see below), whose sum is σ = 215723088. Its totient is φ = 107126624.

The previous prime is 161241121. The next prime is 161241173. The reversal of 161241123 is 321142161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161241123 - 2¹ = 161241121 is a prime.

It is a super-2 number, since 2×161241123² = 51997399492602258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161241123.

It is not an unprimeable number, because it can be changed into a prime (161241121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90840 + ... + 92597.

It is an arithmetic number, because the mean of its divisors is an integer number (26965386).

Almost surely, 2^161241123 is an apocalyptic number.

161241123 is a deficient number, since it is larger than the sum of its proper divisors (54481965).

161241123 is a wasteful number, since it uses less digits than its factorization.

161241123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183733.

The product of its digits is 288, while the sum is 21.

The square root of 161241123 is about 12698.0755628560. The cubic root of 161241123 is about 544.2836285443.

Adding to 161241123 its reverse (321142161), we get a palindrome (482383284).

The spelling of 161241123 in words is "one hundred sixty-one million, two hundred forty-one thousand, one hundred twenty-three".