It is a weak prime.
It is a cyclic number.
It is a Chen prime.
It is an Ulam number.
It is a self number, because there is not a number n which added to its sum of digits gives 361421.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 361421.
2361421 is an apocalyptic number.
It is an amenable number.
361421 is an equidigital number, since it uses as much as digits as its factorization.
361421 is an evil number, because the sum of its binary digits is even.
The square root of 361421 is about 601.1830004250. The cubic root of 361421 is about 71.2313421958.
Adding to 361421 its reverse (124163), we get a palindrome (485584).
The spelling of 361421 in words is "three hundred sixty-one thousand, four hundred twenty-one".