1030421 has 12 divisors (see below), whose sum is σ = 1270188. Its totient is φ = 830592.

The previous prime is 1030417. The next prime is 1030429. The reversal of 1030421 is 1240301.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 790321 + 240100 = 889^2 + 490^2 .

It is not a de Polignac number, because 1030421 - 2² = 1030417 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1030429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 215 + ... + 1451.

It is an arithmetic number, because the mean of its divisors is an integer number (105849).

2^1030421 is an apocalyptic number.

It is an amenable number.

1030421 is a deficient number, since it is larger than the sum of its proper divisors (239767).

1030421 is a wasteful number, since it uses less digits than its factorization.

1030421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268 (or 1261 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1030421 is about 1015.0965471323. The cubic root of 1030421 is about 101.0039210320.

Adding to 1030421 its reverse (1240301), we get a palindrome (2270722).

The spelling of 1030421 in words is "one million, thirty thousand, four hundred twenty-one".