42256898 has 4 divisors (see below), whose sum is σ = 63385350. Its totient is φ = 21128448.

The previous prime is 42256889. The next prime is 42256909. The reversal of 42256898 is 89865224.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 31214569 + 11042329 = 5587^2 + 3323^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10564223 + ... + 10564226.

Almost surely, 2^42256898 is an apocalyptic number.

42256898 is a deficient number, since it is larger than the sum of its proper divisors (21128452).

42256898 is a wasteful number, since it uses less digits than its factorization.

42256898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21128451.

The product of its digits is 276480, while the sum is 44.

The square root of 42256898 is about 6500.5305937285. The cubic root of 42256898 is about 348.3099420864.

The spelling of 42256898 in words is "forty-two million, two hundred fifty-six thousand, eight hundred ninety-eight".