401421194 has 4 divisors (see below), whose sum is σ = 602131794. Its totient is φ = 200710596.

The previous prime is 401421169. The next prime is 401421197. The reversal of 401421194 is 491124104.

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., 277655569 + 123765625 = 16663^2 + 11125^2 .

It is a super-2 number, since 2×401421194² = 322277949984771272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401421197) by changing a digit.

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 as a sum of consecutive naturals, namely, 100355297 + ... + 100355300.

Almost surely, 2^401421194 is an apocalyptic number.

401421194 is a deficient number, since it is larger than the sum of its proper divisors (200710600).

401421194 is a wasteful number, since it uses less digits than its factorization.

401421194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200710599.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 401421194 is about 20035.4983466846. The cubic root of 401421194 is about 737.6778888709.

Adding to 401421194 its reverse (491124104), we get a palindrome (892545298).

The spelling of 401421194 in words is "four hundred one million, four hundred twenty-one thousand, one hundred ninety-four".