1421753 has 4 divisors (see below), whose sum is σ = 1467648. Its totient is φ = 1375860.

The previous prime is 1421747. The next prime is 1421759. The reversal of 1421753 is 3571241.

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 an interprime number because it is at equal distance from previous prime (1421747) and next prime (1421759).

It is a cyclic number.

It is not a de Polignac number, because 1421753 - 2⁴ = 1421737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1421759) 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, 22901 + ... + 22962.

It is an arithmetic number, because the mean of its divisors is an integer number (366912).

2^1421753 is an apocalyptic number.

It is an amenable number.

1421753 is a deficient number, since it is larger than the sum of its proper divisors (45895).

1421753 is an equidigital number, since it uses as much as digits as its factorization.

1421753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45894.

The product of its digits is 840, while the sum is 23.

The square root of 1421753 is about 1192.3728443738. The cubic root of 1421753 is about 112.4453199294.

Adding to 1421753 its reverse (3571241), we get a palindrome (4992994).

The spelling of 1421753 in words is "one million, four hundred twenty-one thousand, seven hundred fifty-three".