73165642 has 32 divisors (see below), whose sum is σ = 125411328. Its totient is φ = 31710000.

The previous prime is 73165633. The next prime is 73165649. The reversal of 73165642 is 24656137.

It is a happy number.

It is a super-2 number, since 2×73165642² = 10706422338544328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 73165598 and 73165607.

It is not an unprimeable number, because it can be changed into a prime (73165649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47667 + ... + 49177.

It is an arithmetic number, because the mean of its divisors is an integer number (3919104).

Almost surely, 2^73165642 is an apocalyptic number.

73165642 is a deficient number, since it is larger than the sum of its proper divisors (52245686).

73165642 is a wasteful number, since it uses less digits than its factorization.

73165642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626.

The product of its digits is 30240, while the sum is 34.

The square root of 73165642 is about 8553.6917176153. The cubic root of 73165642 is about 418.2497877461.

The spelling of 73165642 in words is "seventy-three million, one hundred sixty-five thousand, six hundred forty-two".