42299388 has 24 divisors (see below), whose sum is σ = 109665360. Its totient is φ = 14099760.

The previous prime is 42299363. The next prime is 42299393. The reversal of 42299388 is 88399224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195723 + ... + 195938.

It is an arithmetic number, because the mean of its divisors is an integer number (4569390).

Almost surely, 2^42299388 is an apocalyptic number.

It is an amenable number.

42299388 is an abundant number, since it is smaller than the sum of its proper divisors (67365972).

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

42299388 is a wasteful number, since it uses less digits than its factorization.

42299388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391674 (or 391666 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 42299388 is about 6503.7979673419. The cubic root of 42299388 is about 348.4266467545.

The spelling of 42299388 in words is "forty-two million, two hundred ninety-nine thousand, three hundred eighty-eight".