42278498 has 8 divisors (see below), whose sum is σ = 63979308. Its totient is φ = 20952064.

The previous prime is 42278497. The next prime is 42278501. The reversal of 42278498 is 89487224.

It can be written as a sum of positive squares in 2 ways, for example, as 34421689 + 7856809 = 5867^2 + 2803^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (42278497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93311 + ... + 93762.

Almost surely, 2^42278498 is an apocalyptic number.

42278498 is a deficient number, since it is larger than the sum of its proper divisors (21700810).

42278498 is a wasteful number, since it uses less digits than its factorization.

42278498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187188.

The product of its digits is 258048, while the sum is 44.

The square root of 42278498 is about 6502.1917843140. The cubic root of 42278498 is about 348.3692792485.

The spelling of 42278498 in words is "forty-two million, two hundred seventy-eight thousand, four hundred ninety-eight".