1453421 has 4 divisors (see below), whose sum is σ = 1458144. Its totient is φ = 1448700.

The previous prime is 1453411. The next prime is 1453427. The reversal of 1453421 is 1243541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1453421 - 2¹⁸ = 1191277 is a prime.

It is a super-5 number, since 5×1453421⁵ (a number of 32 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1453393 and 1453402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1453427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1865 + ... + 2526.

It is an arithmetic number, because the mean of its divisors is an integer number (364536).

2^1453421 is an apocalyptic number.

It is an amenable number.

1453421 is a deficient number, since it is larger than the sum of its proper divisors (4723).

1453421 is an equidigital number, since it uses as much as digits as its factorization.

1453421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4722.

The product of its digits is 480, while the sum is 20.

The square root of 1453421 is about 1205.5791139531. The cubic root of 1453421 is about 113.2740626260.

Adding to 1453421 its reverse (1243541), we get a palindrome (2696962).

It can be divided in two parts, 14 and 53421, that added together give a palindrome (53435).

The spelling of 1453421 in words is "one million, four hundred fifty-three thousand, four hundred twenty-one".