1285937 has 2 divisors, whose sum is σ = 1285938. Its totient is φ = 1285936.

The previous prime is 1285913. The next prime is 1285943. The reversal of 1285937 is 7395821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 790321 + 495616 = 889^2 + 704^2 .

It is an emirp because it is prime and its reverse (7395821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1285937 - 2²⁰ = 237361 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1285897 and 1285906.

It is not a weakly prime, because it can be changed into another prime (1285237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642968 + 642969.

It is an arithmetic number, because the mean of its divisors is an integer number (642969).

2^1285937 is an apocalyptic number.

It is an amenable number.

1285937 is a deficient number, since it is larger than the sum of its proper divisors (1).

1285937 is an equidigital number, since it uses as much as digits as its factorization.

1285937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 35.

The square root of 1285937 is about 1133.9916225440. The cubic root of 1285937 is about 108.7443155526.

It can be divided in two parts, 1285 and 937, that added together give a palindrome (2222).

The spelling of 1285937 in words is "one million, two hundred eighty-five thousand, nine hundred thirty-seven".