42073697 has 4 divisors (see below), whose sum is σ = 42097860. Its totient is φ = 42049536.

The previous prime is 42073687. The next prime is 42073711. The reversal of 42073697 is 79637024.

42073697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6599761 + 35473936 = 2569^2 + 5956^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42073697 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42073697.

It is not an unprimeable number, because it can be changed into a prime (42073607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9248 + ... + 13025.

It is an arithmetic number, because the mean of its divisors is an integer number (10524465).

Almost surely, 2^42073697 is an apocalyptic number.

It is an amenable number.

42073697 is a deficient number, since it is larger than the sum of its proper divisors (24163).

42073697 is a wasteful number, since it uses less digits than its factorization.

42073697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24162.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 42073697 is about 6486.4240533594. The cubic root of 42073697 is about 347.8058573830.

The spelling of 42073697 in words is "forty-two million, seventy-three thousand, six hundred ninety-seven".