1026021 has 8 divisors (see below), whose sum is σ = 1387584. Its totient is φ = 674240.

The previous prime is 1025957. The next prime is 1026029. The reversal of 1026021 is 1206201.

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 1026021 - 2⁶ = 1025957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1025988 and 1026006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1026029) 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, 2196 + ... + 2621.

It is an arithmetic number, because the mean of its divisors is an integer number (173448).

2^1026021 is an apocalyptic number.

It is an amenable number.

1026021 is a deficient number, since it is larger than the sum of its proper divisors (361563).

1026021 is an equidigital number, since it uses as much as digits as its factorization.

1026021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4891.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1026021 is about 1012.9269470204. The cubic root of 1026021 is about 100.8599503229.

The spelling of 1026021 in words is "one million, twenty-six thousand, twenty-one".