1287274132 has 24 divisors (see below), whose sum is σ = 2331463680. Its totient is φ = 621250080.

The previous prime is 1287274103. The next prime is 1287274139. The reversal of 1287274132 is 2314727821.

It is a junction number, because it is equal to n+sod(n) for n = 1287274091 and 1287274100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1287274139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34893 + ... + 61579.

It is an arithmetic number, because the mean of its divisors is an integer number (97144320).

Almost surely, 2^1287274132 is an apocalyptic number.

It is an amenable number.

1287274132 is a deficient number, since it is larger than the sum of its proper divisors (1044189548).

1287274132 is a wasteful number, since it uses less digits than its factorization.

1287274132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27111 (or 27109 counting only the distinct ones).

The product of its digits is 37632, while the sum is 37.

The square root of 1287274132 is about 35878.6027041188. The cubic root of 1287274132 is about 1087.8199369059.

The spelling of 1287274132 in words is "one billion, two hundred eighty-seven million, two hundred seventy-four thousand, one hundred thirty-two".