42679242 has 24 divisors (see below), whose sum is σ = 95661540. Its totient is φ = 13735680.

The previous prime is 42679223. The next prime is 42679249. The reversal of 42679242 is 24297624.

It can be written as a sum of positive squares in 2 ways, for example, as 42653961 + 25281 = 6531^2 + 159^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42679197 and 42679206.

It is not an unprimeable number, because it can be changed into a prime (42679249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40359 + ... + 41402.

Almost surely, 2^42679242 is an apocalyptic number.

42679242 is an abundant number, since it is smaller than the sum of its proper divisors (52982298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42679242 is a wasteful number, since it uses less digits than its factorization.

42679242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81798 (or 81795 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 42679242 is about 6532.9351749424. The cubic root of 42679242 is about 349.4665124146.

The spelling of 42679242 in words is "forty-two million, six hundred seventy-nine thousand, two hundred forty-two".