73890042 has 16 divisors (see below), whose sum is σ = 147921120. Its totient is φ = 24606512.

The previous prime is 73890029. The next prime is 73890049. The reversal of 73890042 is 24009837.

It is a junction number, because it is equal to n+sod(n) for n = 73889985 and 73890012.

It is not an unprimeable number, because it can be changed into a prime (73890049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1684 + ... + 12272.

It is an arithmetic number, because the mean of its divisors is an integer number (9245070).

Almost surely, 2^73890042 is an apocalyptic number.

73890042 is an abundant number, since it is smaller than the sum of its proper divisors (74031078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73890042 is a wasteful number, since it uses less digits than its factorization.

73890042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11757.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 73890042 is about 8595.9317121531. The cubic root of 73890042 is about 419.6255960465.

Adding to 73890042 its reverse (24009837), we get a palindrome (97899879).

The spelling of 73890042 in words is "seventy-three million, eight hundred ninety thousand, forty-two".