1064421 has 20 divisors (see below), whose sum is σ = 1685772. Its totient is φ = 667008.

The previous prime is 1064411. The next prime is 1064431. The reversal of 1064421 is 1244601.

1064421 is a `hidden beast` number, since 1 + 0 + 644 + 21 = 666.

It is an interprime number because it is at equal distance from previous prime (1064411) and next prime (1064431).

It can be written as a sum of positive squares in 2 ways, for example, as 408321 + 656100 = 639^2 + 810^2 .

It is not a de Polignac number, because 1064421 - 2¹⁰ = 1063397 is a prime.

It is a super-2 number, since 2×1064421² = 2265984130482, which contains 22 as substring.

It is an Ulam number.

1064421 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1064394 and 1064403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1064411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 991 + ... + 1763.

2^1064421 is an apocalyptic number.

It is an amenable number.

1064421 is a deficient number, since it is larger than the sum of its proper divisors (621351).

1064421 is an equidigital number, since it uses as much as digits as its factorization.

1064421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802 (or 793 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1064421 is about 1031.7078074726. The cubic root of 1064421 is about 102.1028374598.

It can be divided in two parts, 1064 and 421, that added together give a triangular number (1485 = T₅₄).

The spelling of 1064421 in words is "one million, sixty-four thousand, four hundred twenty-one".