1421297 has 4 divisors (see below), whose sum is σ = 1435200. Its totient is φ = 1407396.

The previous prime is 1421293. The next prime is 1421309. The reversal of 1421297 is 7921241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7921241 = 41 ⋅193201.

It is a cyclic number.

It is not a de Polignac number, because 1421297 - 2² = 1421293 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6797 + ... + 7002.

It is an arithmetic number, because the mean of its divisors is an integer number (358800).

2^1421297 is an apocalyptic number.

It is an amenable number.

1421297 is a deficient number, since it is larger than the sum of its proper divisors (13903).

1421297 is a wasteful number, since it uses less digits than its factorization.

1421297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13902.

The product of its digits is 1008, while the sum is 26.

The square root of 1421297 is about 1192.1816136814. The cubic root of 1421297 is about 112.4332970842.

The spelling of 1421297 in words is "one million, four hundred twenty-one thousand, two hundred ninety-seven".