42628073 has 4 divisors (see below), whose sum is σ = 42714000. Its totient is φ = 42542148.

The previous prime is 42628067. The next prime is 42628087. The reversal of 42628073 is 37082624.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42628073 - 2⁸ = 42627817 is a prime.

It is a super-4 number, since 4×42628073⁴ (a number of 32 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42628043) 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, 42215 + ... + 43212.

It is an arithmetic number, because the mean of its divisors is an integer number (10678500).

Almost surely, 2^42628073 is an apocalyptic number.

It is an amenable number.

42628073 is a deficient number, since it is larger than the sum of its proper divisors (85927).

42628073 is an equidigital number, since it uses as much as digits as its factorization.

42628073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85926.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 42628073 is about 6529.0177668620. The cubic root of 42628073 is about 349.3267957577.

The spelling of 42628073 in words is "forty-two million, six hundred twenty-eight thousand, seventy-three".