1127421 has 6 divisors (see below), whose sum is σ = 1628510. Its totient is φ = 751608.

The previous prime is 1127411. The next prime is 1127443. The reversal of 1127421 is 1247211.

It can be written as a sum of positive squares in only one way, i.e., 1028196 + 99225 = 1014^2 + 315^2 .

It is not a de Polignac number, because 1127421 - 2¹⁰ = 1126397 is a prime.

It is a super-2 number, since 2×1127421² = 2542156222482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1127394 and 1127403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1127411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62626 + ... + 62643.

2^1127421 is an apocalyptic number.

It is an amenable number.

1127421 is a deficient number, since it is larger than the sum of its proper divisors (501089).

1127421 is a wasteful number, since it uses less digits than its factorization.

1127421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125275 (or 125272 counting only the distinct ones).

The product of its digits is 112, while the sum is 18.

The square root of 1127421 is about 1061.8008287810. The cubic root of 1127421 is about 104.0787433725.

The spelling of 1127421 in words is "one million, one hundred twenty-seven thousand, four hundred twenty-one".