1050421 has 2 divisors, whose sum is σ = 1050422.
Its totient is φ = 1050420.
The previous prime is 1050391. The next prime is 1050431. The reversal of 1050421 is 1240501.
Adding to 1050421 its reverse (1240501), we get a palindrome (2290922).
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 790321 + 260100 = 889^2 + 510^2
It is a cyclic number.
It is not a de Polignac number, because 1050421 - 217 = 919349 is a prime.
It is a super-2 number, since 2×10504212 = 2206768554482, which contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1050431) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525210 + 525211.
It is an arithmetic number, because the mean of its divisors is an integer number (525211).
21050421 is an apocalyptic number.
It is an amenable number.
1050421 is a deficient number, since it is larger than the sum of its proper divisors (1).
1050421 is an equidigital number, since it uses as much as digits as its factorization.
1050421 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 40, while the sum is 13.
The square root of 1050421 is about 1024.9004829738.
The cubic root of 1050421 is about 101.6532180843.
The spelling of 1050421 in words is "one million, fifty thousand, four hundred twenty-one".