1249121 has 2 divisors, whose sum is σ = 1249122. Its totient is φ = 1249120.

The previous prime is 1249111. The next prime is 1249133. The reversal of 1249121 is 1219421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 774400 + 474721 = 880^2 + 689^2 .

It is a cyclic number.

It is not a de Polignac number, because 1249121 - 2⁶ = 1249057 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1249093 and 1249102.

It is not a weakly prime, because it can be changed into another prime (1249111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624560 + 624561.

It is an arithmetic number, because the mean of its divisors is an integer number (624561).

2^1249121 is an apocalyptic number.

It is an amenable number.

1249121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1249121 is an equidigital number, since it uses as much as digits as its factorization.

1249121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 20.

The square root of 1249121 is about 1117.6408188680. The cubic root of 1249121 is about 107.6964786061.

The spelling of 1249121 in words is "one million, two hundred forty-nine thousand, one hundred twenty-one".