73521842 has 4 divisors (see below), whose sum is σ = 110282766. Its totient is φ = 36760920.

The previous prime is 73521841. The next prime is 73521881. The reversal of 73521842 is 24812537.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 62900761 + 10621081 = 7931^2 + 3259^2 .

It is a super-2 number, since 2×73521842² = 10810922502145928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 73521799 and 73521808.

It is not an unprimeable number, because it can be changed into a prime (73521841) 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 as a sum of consecutive naturals, namely, 18380459 + ... + 18380462.

Almost surely, 2^73521842 is an apocalyptic number.

73521842 is a deficient number, since it is larger than the sum of its proper divisors (36760924).

73521842 is a wasteful number, since it uses less digits than its factorization.

73521842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36760923.

The product of its digits is 13440, while the sum is 32.

The square root of 73521842 is about 8574.4878564262. The cubic root of 73521842 is about 418.9274257566.

The spelling of 73521842 in words is "seventy-three million, five hundred twenty-one thousand, eight hundred forty-two".