42494028 has 24 divisors (see below), whose sum is σ = 99258432. Its totient is φ = 14149584.

The previous prime is 42494027. The next prime is 42494057. The reversal of 42494028 is 82049424.

It is a self number, because there is not a number n which added to its sum of digits gives 42494028.

It is not an unprimeable number, because it can be changed into a prime (42494027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19951 + ... + 21977.

It is an arithmetic number, because the mean of its divisors is an integer number (4135768).

Almost surely, 2^42494028 is an apocalyptic number.

It is an amenable number.

42494028 is an abundant number, since it is smaller than the sum of its proper divisors (56764404).

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

42494028 is a wasteful number, since it uses less digits than its factorization.

42494028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3781 (or 3779 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 42494028 is about 6518.7443576198. The cubic root of 42494028 is about 348.9602557894.

The spelling of 42494028 in words is "forty-two million, four hundred ninety-four thousand, twenty-eight".