1287153 has 12 divisors (see below), whose sum is σ = 2124928. Its totient is φ = 735480.

The previous prime is 1287133. The next prime is 1287157. The reversal of 1287153 is 3517821.

It is not a de Polignac number, because 1287153 - 2⁹ = 1286641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1287157) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10153 + ... + 10278.

2^1287153 is an apocalyptic number.

It is an amenable number.

1287153 is a deficient number, since it is larger than the sum of its proper divisors (837775).

1287153 is a wasteful number, since it uses less digits than its factorization.

1287153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20444 (or 20441 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 1287153 is about 1134.5276550177. The cubic root of 1287153 is about 108.7785814690.

The spelling of 1287153 in words is "one million, two hundred eighty-seven thousand, one hundred fifty-three".