1296921 has 16 divisors (see below), whose sum is σ = 1855040. Its totient is φ = 803520.

The previous prime is 1296907. The next prime is 1296929.

It is a happy number.

1296921 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1296921 - 2⁹ = 1296409 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1296929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3291 + ... + 3663.

It is an arithmetic number, because the mean of its divisors is an integer number (115940).

2^1296921 is an apocalyptic number.

It is an amenable number.

1296921 is a deficient number, since it is larger than the sum of its proper divisors (558119).

1296921 is a wasteful number, since it uses less digits than its factorization.

1296921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456.

The product of its digits is 1944, while the sum is 30.

The square root of 1296921 is about 1138.8243938378. The cubic root of 1296921 is about 109.0530561221.

The spelling of 1296921 in words is "one million, two hundred ninety-six thousand, nine hundred twenty-one".