42112073 has 4 divisors (see below), whose sum is σ = 42225348. Its totient is φ = 41998800.

The previous prime is 42112067. The next prime is 42112079. The reversal of 42112073 is 37021124.

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

It is an interprime number because it is at equal distance from previous prime (42112067) and next prime (42112079).

It can be written as a sum of positive squares in 2 ways, for example, as 34199104 + 7912969 = 5848^2 + 2813^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42112073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42112079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56078 + ... + 56823.

It is an arithmetic number, because the mean of its divisors is an integer number (10556337).

Almost surely, 2^42112073 is an apocalyptic number.

It is an amenable number.

42112073 is a deficient number, since it is larger than the sum of its proper divisors (113275).

42112073 is a wasteful number, since it uses less digits than its factorization.

42112073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113274.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 42112073 is about 6489.3815575908. The cubic root of 42112073 is about 347.9115714235.

Adding to 42112073 its reverse (37021124), we get a palindrome (79133197).

It can be divided in two parts, 4211207 and 3, that multiplied together give a palindrome (12633621).

The spelling of 42112073 in words is "forty-two million, one hundred twelve thousand, seventy-three".