161123927 has 8 divisors (see below), whose sum is σ = 162699264. Its totient is φ = 159556608.

The previous prime is 161123903. The next prime is 161123929. The reversal of 161123927 is 729321161.

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 161123927 - 2¹⁴ = 161107543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161123893 and 161123902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161123929) 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, 43178 + ... + 46760.

It is an arithmetic number, because the mean of its divisors is an integer number (20337408).

Almost surely, 2^161123927 is an apocalyptic number.

161123927 is a deficient number, since it is larger than the sum of its proper divisors (1575337).

161123927 is a wasteful number, since it uses less digits than its factorization.

161123927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4009.

The product of its digits is 4536, while the sum is 32.

The square root of 161123927 is about 12693.4600089968. The cubic root of 161123927 is about 544.1517281051.

The spelling of 161123927 in words is "one hundred sixty-one million, one hundred twenty-three thousand, nine hundred twenty-seven".