1150421 has 2 divisors, whose sum is σ = 1150422. Its totient is φ = 1150420.

The previous prime is 1150417. The next prime is 1150423. The reversal of 1150421 is 1240511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1020100 + 130321 = 1010^2 + 361^2 .

It is an emirp because it is prime and its reverse (1240511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1150421 - 2² = 1150417 is a prime.

Together with 1150423, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1150396 and 1150405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1150423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575210 + 575211.

It is an arithmetic number, because the mean of its divisors is an integer number (575211).

2^1150421 is an apocalyptic number.

It is an amenable number.

1150421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1150421 is an equidigital number, since it uses as much as digits as its factorization.

1150421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 1150421 is about 1072.5768037768. The cubic root of 1150421 is about 104.7817386067.

Adding to 1150421 its reverse (1240511), we get a palindrome (2390932).

The spelling of 1150421 in words is "one million, one hundred fifty thousand, four hundred twenty-one".