23842161 has 32 divisors (see below), whose sum is σ = 40800000. Its totient is φ = 13478400.

The previous prime is 23842157. The next prime is 23842163. The reversal of 23842161 is 16124832.

23842161 is a `hidden beast` number, since 238 + 421 + 6 + 1 = 666.

It is not a de Polignac number, because 23842161 - 2² = 23842157 is a prime.

It is a super-2 number, since 2×23842161² = 1136897282299842, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (23842163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18465 + ... + 19713.

It is an arithmetic number, because the mean of its divisors is an integer number (1275000).

Almost surely, 2^23842161 is an apocalyptic number.

23842161 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23842161 is a deficient number, since it is larger than the sum of its proper divisors (16957839).

23842161 is a wasteful number, since it uses less digits than its factorization.

23842161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366 (or 1360 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 23842161 is about 4882.8435363014. The cubic root of 23842161 is about 287.8161804429.

Adding to 23842161 its reverse (16124832), we get a palindrome (39966993).

The spelling of 23842161 in words is "twenty-three million, eight hundred forty-two thousand, one hundred sixty-one".