42000049 has 16 divisors (see below), whose sum is σ = 52017280. Its totient is φ = 33218640.

The previous prime is 42000037. The next prime is 42000059. The reversal of 42000049 is 94000024.

It is not a de Polignac number, because 42000049 - 2⁵ = 42000017 is a prime.

42000049 is a modest number, since divided by 49 gives 42 as remainder.

It is not an unprimeable number, because it can be changed into a prime (42000019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14014 + ... + 16744.

It is an arithmetic number, because the mean of its divisors is an integer number (3251080).

Almost surely, 2^42000049 is an apocalyptic number.

It is an amenable number.

42000049 is a deficient number, since it is larger than the sum of its proper divisors (10017231).

42000049 is an equidigital number, since it uses as much as digits as its factorization.

42000049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2777 (or 2751 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 42000049 is about 6480.7444788388. The cubic root of 42000049 is about 347.6027996674.

The spelling of 42000049 in words is "forty-two million, forty-nine", and thus it is an aban number and an uban number.