42921179 has 4 divisors (see below), whose sum is σ = 49052784. Its totient is φ = 36789576.

The previous prime is 42921173. The next prime is 42921191. The reversal of 42921179 is 97112924.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42921179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42921173) 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, 3065792 + ... + 3065805.

It is an arithmetic number, because the mean of its divisors is an integer number (12263196).

Almost surely, 2^42921179 is an apocalyptic number.

42921179 is a deficient number, since it is larger than the sum of its proper divisors (6131605).

42921179 is an equidigital number, since it uses as much as digits as its factorization.

42921179 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6131604.

The product of its digits is 9072, while the sum is 35.

The square root of 42921179 is about 6551.4257226958. The cubic root of 42921179 is about 350.1256120564.

The spelling of 42921179 in words is "forty-two million, nine hundred twenty-one thousand, one hundred seventy-nine".