1201397 has 4 divisors (see below), whose sum is σ = 1203840. Its totient is φ = 1198956.

The previous prime is 1201381. The next prime is 1201439. The reversal of 1201397 is 7931021.

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.

It is a cyclic number.

It is not a de Polignac number, because 1201397 - 2⁴ = 1201381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197 + ... + 1562.

It is an arithmetic number, because the mean of its divisors is an integer number (300960).

2^1201397 is an apocalyptic number.

It is an amenable number.

1201397 is a deficient number, since it is larger than the sum of its proper divisors (2443).

1201397 is an equidigital number, since it uses as much as digits as its factorization.

1201397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2442.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 1201397 is about 1096.0825698824. The cubic root of 1201397 is about 106.3070779825.

The spelling of 1201397 in words is "one million, two hundred one thousand, three hundred ninety-seven".