42879141 has 12 divisors (see below), whose sum is σ = 62576332. Its totient is φ = 28290816.

The previous prime is 42879131. The next prime is 42879163. The reversal of 42879141 is 14197824.

It can be written as a sum of positive squares in 2 ways, for example, as 30305025 + 12574116 = 5505^2 + 3546^2 .

It is not a de Polignac number, because 42879141 - 2⁶ = 42879077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42879096 and 42879105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42879121) 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 11 ways as a sum of consecutive naturals, for example, 23686 + ... + 25431.

Almost surely, 2^42879141 is an apocalyptic number.

It is an amenable number.

42879141 is a deficient number, since it is larger than the sum of its proper divisors (19697191).

42879141 is a wasteful number, since it uses less digits than its factorization.

42879141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49220 (or 49217 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 42879141 is about 6548.2166274490. The cubic root of 42879141 is about 350.0112676645.

The spelling of 42879141 in words is "forty-two million, eight hundred seventy-nine thousand, one hundred forty-one".