1248021 has 16 divisors (see below), whose sum is σ = 1958400. Its totient is φ = 782784.

The previous prime is 1248019. The next prime is 1248031. The reversal of 1248021 is 1208421.

It is not a de Polignac number, because 1248021 - 2¹ = 1248019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1247985 and 1248003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1248001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 901 + ... + 1818.

It is an arithmetic number, because the mean of its divisors is an integer number (122400).

2^1248021 is an apocalyptic number.

It is an amenable number.

1248021 is a deficient number, since it is larger than the sum of its proper divisors (710379).

1248021 is a wasteful number, since it uses less digits than its factorization.

1248021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2745 (or 2739 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1248021 is about 1117.1486024697. The cubic root of 1248021 is about 107.6648561244.

The spelling of 1248021 in words is "one million, two hundred forty-eight thousand, twenty-one".