1293921 has 16 divisors (see below), whose sum is σ = 2030400. Its totient is φ = 811584.

The previous prime is 1293917. The next prime is 1293923.

1293921 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1293921 - 2² = 1293917 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1293923) 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, 951 + ... + 1868.

It is an arithmetic number, because the mean of its divisors is an integer number (126900).

2^1293921 is an apocalyptic number.

It is an amenable number.

1293921 is a deficient number, since it is larger than the sum of its proper divisors (736479).

1293921 is a wasteful number, since it uses less digits than its factorization.

1293921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2845 (or 2839 counting only the distinct ones).

The product of its digits is 972, while the sum is 27.

The square root of 1293921 is about 1137.5064834980. The cubic root of 1293921 is about 108.9689050825.

The spelling of 1293921 in words is "one million, two hundred ninety-three thousand, nine hundred twenty-one".