73842161 has 4 divisors (see below), whose sum is σ = 73996800. Its totient is φ = 73687524.

The previous prime is 73842133. The next prime is 73842179. The reversal of 73842161 is 16124837.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16124837 = 151 ⋅106787.

It is a cyclic number.

It is not a de Polignac number, because 73842161 - 2¹⁴ = 73825777 is a prime.

It is a super-2 number, since 2×73842161² = 10905329482299842, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (73842191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76601 + ... + 77558.

It is an arithmetic number, because the mean of its divisors is an integer number (18499200).

Almost surely, 2^73842161 is an apocalyptic number.

It is an amenable number.

73842161 is a deficient number, since it is larger than the sum of its proper divisors (154639).

73842161 is a wasteful number, since it uses less digits than its factorization.

73842161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154638.

The product of its digits is 8064, while the sum is 32.

The square root of 73842161 is about 8593.1461642404. The cubic root of 73842161 is about 419.5349368539.

Adding to 73842161 its reverse (16124837), we get a palindrome (89966998).

The spelling of 73842161 in words is "seventy-three million, eight hundred forty-two thousand, one hundred sixty-one".