1053421 has 2 divisors, whose sum is σ = 1053422. Its totient is φ = 1053420.

The previous prime is 1053407. The next prime is 1053449. The reversal of 1053421 is 1243501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 972196 + 81225 = 986^2 + 285^2 .

It is a cyclic number.

It is not a de Polignac number, because 1053421 - 2⁷ = 1053293 is a prime.

It is a super-5 number, since 5×1053421⁵ (a number of 31 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 1053395 and 1053404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1053401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 526710 + 526711.

It is an arithmetic number, because the mean of its divisors is an integer number (526711).

2^1053421 is an apocalyptic number.

It is an amenable number.

1053421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1053421 is an equidigital number, since it uses as much as digits as its factorization.

1053421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1053421 is about 1026.3629962153. The cubic root of 1053421 is about 101.7498998886.

Adding to 1053421 its reverse (1243501), we get a palindrome (2296922).

The spelling of 1053421 in words is "one million, fifty-three thousand, four hundred twenty-one".