42689475 has 36 divisors (see below), whose sum is σ = 76824696. Its totient is φ = 22659840.

The previous prime is 42689461. The next prime is 42689503. The reversal of 42689475 is 57498624.

It is a happy number.

42689475 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42689475 - 2⁴ = 42689459 is a prime.

It is a super-3 number, since 3×42689475³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 42689475.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 75544 + ... + 76106.

Almost surely, 2^42689475 is an apocalyptic number.

42689475 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42689475 is a deficient number, since it is larger than the sum of its proper divisors (34135221).

42689475 is a wasteful number, since it uses less digits than its factorization.

42689475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916 (or 908 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 42689475 is about 6533.7183134874. The cubic root of 42689475 is about 349.4944401603.

The spelling of 42689475 in words is "forty-two million, six hundred eighty-nine thousand, four hundred seventy-five".