1290197 has 8 divisors (see below), whose sum is σ = 1335936. Its totient is φ = 1245312.

The previous prime is 1290173. The next prime is 1290199. The reversal of 1290197 is 7910921.

1290197 is nontrivially palindromic in base 9.

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

It is a de Polignac number, because none of the positive numbers 2^k-1290197 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 (1290199) 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, 4418 + ... + 4700.

It is an arithmetic number, because the mean of its divisors is an integer number (166992).

2^1290197 is an apocalyptic number.

It is an amenable number.

1290197 is a deficient number, since it is larger than the sum of its proper divisors (45739).

1290197 is an equidigital number, since it uses as much as digits as its factorization.

1290197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427.

The product of its (nonzero) digits is 1134, while the sum is 29.

The square root of 1290197 is about 1135.8683902636. The cubic root of 1290197 is about 108.8642644504.

It can be divided in two parts, 12 and 90197, that added together give a palindrome (90209).

The spelling of 1290197 in words is "one million, two hundred ninety thousand, one hundred ninety-seven".