42090248 has 16 divisors (see below), whose sum is σ = 79062480. Its totient is φ = 21006928.

The previous prime is 42090247. The next prime is 42090259. The reversal of 42090248 is 84209024.

It is a self number, because there is not a number n which added to its sum of digits gives 42090248.

It is not an unprimeable number, because it can be changed into a prime (42090247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215 + ... + 9177.

It is an arithmetic number, because the mean of its divisors is an integer number (4941405).

Almost surely, 2^42090248 is an apocalyptic number.

It is an amenable number.

42090248 is a deficient number, since it is larger than the sum of its proper divisors (36972232).

42090248 is a wasteful number, since it uses less digits than its factorization.

42090248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9556 (or 9552 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 42090248 is about 6487.6997464433. The cubic root of 42090248 is about 347.8514581620.

The spelling of 42090248 in words is "forty-two million, ninety thousand, two hundred forty-eight".