200417842 has 4 divisors (see below), whose sum is σ = 300626766. Its totient is φ = 100208920.

The previous prime is 200417839. The next prime is 200417843. The reversal of 200417842 is 248714002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 248714002 = 2 ⋅124357001.

It can be written as a sum of positive squares in only one way, i.e., 172423161 + 27994681 = 13131^2 + 5291^2 .

It is a super-2 number, since 2×200417842² = 80334622783873928, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 200417842.

It is not an unprimeable number, because it can be changed into a prime (200417843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50104459 + ... + 50104462.

Almost surely, 2^200417842 is an apocalyptic number.

200417842 is a deficient number, since it is larger than the sum of its proper divisors (100208924).

200417842 is a wasteful number, since it uses less digits than its factorization.

200417842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100208923.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 200417842 is about 14156.9008614174. The cubic root of 200417842 is about 585.2105234946.

The spelling of 200417842 in words is "two hundred million, four hundred seventeen thousand, eight hundred forty-two".