1248921 has 12 divisors (see below), whose sum is σ = 1817920. Its totient is φ = 826200.

The previous prime is 1248917. The next prime is 1248941. The reversal of 1248921 is 1298421.

It is not a de Polignac number, because 1248921 - 2² = 1248917 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1248941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 900 + ... + 1818.

2^1248921 is an apocalyptic number.

It is an amenable number.

1248921 is a deficient number, since it is larger than the sum of its proper divisors (568999).

1248921 is a wasteful number, since it uses less digits than its factorization.

1248921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076 (or 1073 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 1248921 is about 1117.5513411025. The cubic root of 1248921 is about 107.6907304452.

It can be divided in two parts, 124 and 8921, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 1248921 in words is "one million, two hundred forty-eight thousand, nine hundred twenty-one".