8042490 has 40 divisors (see below), whose sum is σ = 21627540. Its totient is φ = 2144448.

The previous prime is 8042477. The next prime is 8042509. The reversal of 8042490 is 942408.

It can be written as a sum of positive squares in 2 ways, for example, as 7634169 + 408321 = 2763^2 + 639^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4155 + ... + 5774.

Almost surely, 2^8042490 is an apocalyptic number.

8042490 is an abundant number, since it is smaller than the sum of its proper divisors (13585050).

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

8042490 is a wasteful number, since it uses less digits than its factorization.

8042490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9948 (or 9939 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 8042490 is about 2835.9284194069. The cubic root of 8042490 is about 200.3534583015.

Adding to 8042490 its reverse (942408), we get a palindrome (8984898).

The spelling of 8042490 in words is "eight million, forty-two thousand, four hundred ninety".