1253021 has 8 divisors (see below), whose sum is σ = 1562304. Its totient is φ = 976320.

The previous prime is 1253011. The next prime is 1253023. The reversal of 1253021 is 1203521.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1253021 - 2⁶ = 1252957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1252987 and 1253005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8060 + ... + 8213.

It is an arithmetic number, because the mean of its divisors is an integer number (195288).

2^1253021 is an apocalyptic number.

1253021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1253021 is a deficient number, since it is larger than the sum of its proper divisors (309283).

1253021 is a wasteful number, since it uses less digits than its factorization.

1253021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16291.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 1253021 is about 1119.3842057131. The cubic root of 1253021 is about 107.8084453141.

Adding to 1253021 its reverse (1203521), we get a palindrome (2456542).

The spelling of 1253021 in words is "one million, two hundred fifty-three thousand, twenty-one".