42689627 has 4 divisors (see below), whose sum is σ = 43413240. Its totient is φ = 41966016.

The previous prime is 42689623. The next prime is 42689629. The reversal of 42689627 is 72698624.

42689627 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 is a cyclic number.

It is not a de Polignac number, because 42689627 - 2² = 42689623 is a prime.

It is a super-3 number, since 3×42689627³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42689623) 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, 361718 + ... + 361835.

It is an arithmetic number, because the mean of its divisors is an integer number (10853310).

Almost surely, 2^42689627 is an apocalyptic number.

42689627 is a deficient number, since it is larger than the sum of its proper divisors (723613).

42689627 is an equidigital number, since it uses as much as digits as its factorization.

42689627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723612.

The product of its digits is 290304, while the sum is 44.

The square root of 42689627 is about 6533.7299454446. The cubic root of 42689627 is about 349.4948549628.

The spelling of 42689627 in words is "forty-two million, six hundred eighty-nine thousand, six hundred twenty-seven".