73040042 has 16 divisors (see below), whose sum is σ = 116484480. Its totient is φ = 34271952.

The previous prime is 73040039. The next prime is 73040057. The reversal of 73040042 is 24004037.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 73039996 and 73040023.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12542 + ... + 17417.

It is an arithmetic number, because the mean of its divisors is an integer number (7280280).

Almost surely, 2^73040042 is an apocalyptic number.

73040042 is a deficient number, since it is larger than the sum of its proper divisors (43444438).

73040042 is a wasteful number, since it uses less digits than its factorization.

73040042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30037.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 73040042 is about 8546.3467048792. The cubic root of 73040042 is about 418.0103207848.

Adding to 73040042 its reverse (24004037), we get a palindrome (97044079).

The spelling of 73040042 in words is "seventy-three million, forty thousand, forty-two".