73142985 has 16 divisors (see below), whose sum is σ = 117135936. Its totient is φ = 38973888.

The previous prime is 73142963. The next prime is 73142987. The reversal of 73142985 is 58924137.

It is not a de Polignac number, because 73142985 - 2⁹ = 73142473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73142987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27327 + ... + 29883.

It is an arithmetic number, because the mean of its divisors is an integer number (7320996).

Almost surely, 2^73142985 is an apocalyptic number.

It is an amenable number.

73142985 is a deficient number, since it is larger than the sum of its proper divisors (43992951).

73142985 is a wasteful number, since it uses less digits than its factorization.

73142985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4472.

The product of its digits is 60480, while the sum is 39.

The square root of 73142985 is about 8552.3672161572. The cubic root of 73142985 is about 418.2066105411.

The spelling of 73142985 in words is "seventy-three million, one hundred forty-two thousand, nine hundred eighty-five".