42479791 has 4 divisors (see below), whose sum is σ = 42578784. Its totient is φ = 42380800.

The previous prime is 42479783. The next prime is 42479819. The reversal of 42479791 is 19797424.

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 42479791 - 2³ = 42479783 is a prime.

It is a super-3 number, since 3×42479791³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42479741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48850 + ... + 49711.

It is an arithmetic number, because the mean of its divisors is an integer number (10644696).

Almost surely, 2^42479791 is an apocalyptic number.

42479791 is a deficient number, since it is larger than the sum of its proper divisors (98993).

42479791 is an equidigital number, since it uses as much as digits as its factorization.

42479791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98992.

The product of its digits is 127008, while the sum is 43.

The square root of 42479791 is about 6517.6522613591. The cubic root of 42479791 is about 348.9212801001.

The spelling of 42479791 in words is "forty-two million, four hundred seventy-nine thousand, seven hundred ninety-one".