73543042 has 4 divisors (see below), whose sum is σ = 110314566. Its totient is φ = 36771520.

The previous prime is 73543031. The next prime is 73543061. The reversal of 73543042 is 24034537.

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., 67387681 + 6155361 = 8209^2 + 2481^2 .

It is a super-2 number, since 2×73543042² = 10817158053227528, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 73543042.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18385759 + ... + 18385762.

Almost surely, 2^73543042 is an apocalyptic number.

73543042 is a deficient number, since it is larger than the sum of its proper divisors (36771524).

73543042 is a wasteful number, since it uses less digits than its factorization.

73543042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36771523.

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 73543042 is about 8575.7239927600. The cubic root of 73543042 is about 418.9676877507.

Adding to 73543042 its reverse (24034537), we get a palindrome (97577579).

The spelling of 73543042 in words is "seventy-three million, five hundred forty-three thousand, forty-two".