1235997 has 24 divisors (see below), whose sum is σ = 2131584. Its totient is φ = 674784.

The previous prime is 1235987. The next prime is 1235999. The reversal of 1235997 is 7995321.

It is not a de Polignac number, because 1235997 - 2⁴ = 1235981 is a prime.

1235997 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1235999) 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 in 23 ways as a sum of consecutive naturals, for example, 1023 + ... + 1875.

It is an arithmetic number, because the mean of its divisors is an integer number (88816).

2^1235997 is an apocalyptic number.

It is an amenable number.

1235997 is a deficient number, since it is larger than the sum of its proper divisors (895587).

1235997 is a wasteful number, since it uses less digits than its factorization.

1235997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889 (or 886 counting only the distinct ones).

The product of its digits is 17010, while the sum is 36.

The square root of 1235997 is about 1111.7540195565. The cubic root of 1235997 is about 107.3179757185.

The spelling of 1235997 in words is "one million, two hundred thirty-five thousand, nine hundred ninety-seven".