1149021 has 6 divisors (see below), whose sum is σ = 1659710. Its totient is φ = 766008.

The previous prime is 1149017. The next prime is 1149037. The reversal of 1149021 is 1209411.

It can be written as a sum of positive squares in only one way, i.e., 980100 + 168921 = 990^2 + 411^2 .

It is not a de Polignac number, because 1149021 - 2² = 1149017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1148985 and 1149003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63826 + ... + 63843.

2^1149021 is an apocalyptic number.

It is an amenable number.

1149021 is a deficient number, since it is larger than the sum of its proper divisors (510689).

1149021 is a wasteful number, since it uses less digits than its factorization.

1149021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127675 (or 127672 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 1149021 is about 1071.9239711845. The cubic root of 1149021 is about 104.7392167877.

It can be divided in two parts, 11490 and 21, that added together give a palindrome (11511).

The spelling of 1149021 in words is "one million, one hundred forty-nine thousand, twenty-one".