420934193 has 4 divisors (see below), whose sum is σ = 420980340. Its totient is φ = 420888048.

The previous prime is 420934169. The next prime is 420934207. The reversal of 420934193 is 391439024.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 250683889 + 170250304 = 15833^2 + 13048^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420934193 is a prime.

It is a super-2 number, since 2×420934193² = 354371189673122498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420934123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4298 + ... + 29331.

It is an arithmetic number, because the mean of its divisors is an integer number (105245085).

Almost surely, 2^420934193 is an apocalyptic number.

It is an amenable number.

420934193 is a deficient number, since it is larger than the sum of its proper divisors (46147).

420934193 is a wasteful number, since it uses less digits than its factorization.

420934193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46146.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 420934193 is about 20516.6808475445. The cubic root of 420934193 is about 749.4420697955.

The spelling of 420934193 in words is "four hundred twenty million, nine hundred thirty-four thousand, one hundred ninety-three".