1052421 has 8 divisors (see below), whose sum is σ = 1429920. Its totient is φ = 688272.

The previous prime is 1052417. The next prime is 1052431. The reversal of 1052421 is 1242501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1052421 - 2² = 1052417 is a prime.

It is a super-2 number, since 2×1052421² = 2215179922482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1052421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1052431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3151 + ... + 3468.

It is an arithmetic number, because the mean of its divisors is an integer number (178740).

2^1052421 is an apocalyptic number.

It is an amenable number.

1052421 is a deficient number, since it is larger than the sum of its proper divisors (377499).

1052421 is an equidigital number, since it uses as much as digits as its factorization.

1052421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6675.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1052421 is about 1025.8757234675. The cubic root of 1052421 is about 101.7176930395.

Adding to 1052421 its product of nonzero digits (80), we get a palindrome (1052501).

Adding to 1052421 its reverse (1242501), we get a palindrome (2294922).

The spelling of 1052421 in words is "one million, fifty-two thousand, four hundred twenty-one".