1296987 has 8 divisors (see below), whose sum is σ = 1747536. Its totient is φ = 855552.

The previous prime is 1296983. The next prime is 1297001. The reversal of 1296987 is 7896921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1296987 - 2² = 1296983 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (1296983) 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, 1938 + ... + 2519.

It is an arithmetic number, because the mean of its divisors is an integer number (218442).

2^1296987 is an apocalyptic number.

1296987 is a deficient number, since it is larger than the sum of its proper divisors (450549).

1296987 is an equidigital number, since it uses as much as digits as its factorization.

1296987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4557.

The product of its digits is 54432, while the sum is 42.

The square root of 1296987 is about 1138.8533707199. The cubic root of 1296987 is about 109.0549059854.

The spelling of 1296987 in words is "one million, two hundred ninety-six thousand, nine hundred eighty-seven".