42975479 has 4 divisors (see below), whose sum is σ = 43052376. Its totient is φ = 42898584.

The previous prime is 42975469. The next prime is 42975481. The reversal of 42975479 is 97457924.

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 42975479 - 2⁸ = 42975223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42975469) 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, 37604 + ... + 38729.

It is an arithmetic number, because the mean of its divisors is an integer number (10763094).

Almost surely, 2^42975479 is an apocalyptic number.

42975479 is a deficient number, since it is larger than the sum of its proper divisors (76897).

42975479 is an equidigital number, since it uses as much as digits as its factorization.

42975479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76896.

The product of its digits is 635040, while the sum is 47.

The square root of 42975479 is about 6555.5685489513. The cubic root of 42975479 is about 350.2731989390.

The spelling of 42975479 in words is "forty-two million, nine hundred seventy-five thousand, four hundred seventy-nine".