1249901 has 2 divisors, whose sum is σ = 1249902. Its totient is φ = 1249900.

The previous prime is 1249873. The next prime is 1249921. The reversal of 1249901 is 1099421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 688900 + 561001 = 830^2 + 749^2 .

It is an emirp because it is prime and its reverse (1099421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1249901 - 2⁶ = 1249837 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1249921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624950 + 624951.

It is an arithmetic number, because the mean of its divisors is an integer number (624951).

2^1249901 is an apocalyptic number.

It is an amenable number.

1249901 is a deficient number, since it is larger than the sum of its proper divisors (1).

1249901 is an equidigital number, since it uses as much as digits as its factorization.

1249901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 1249901 is about 1117.9897137273. The cubic root of 1249901 is about 107.7188905727.

The spelling of 1249901 in words is "one million, two hundred forty-nine thousand, nine hundred one".