1288101 has 4 divisors (see below), whose sum is σ = 1717472. Its totient is φ = 858732.

The previous prime is 1288099. The next prime is 1288103. The reversal of 1288101 is 1018821.

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 an interprime number because it is at equal distance from previous prime (1288099) and next prime (1288103).

It is not a de Polignac number, because 1288101 - 2¹ = 1288099 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288103) 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, 214681 + ... + 214686.

It is an arithmetic number, because the mean of its divisors is an integer number (429368).

2^1288101 is an apocalyptic number.

It is an amenable number.

1288101 is a deficient number, since it is larger than the sum of its proper divisors (429371).

1288101 is an equidigital number, since it uses as much as digits as its factorization.

1288101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429370.

The product of its (nonzero) digits is 128, while the sum is 21.

The square root of 1288101 is about 1134.9453731348. The cubic root of 1288101 is about 108.8052803900.

The spelling of 1288101 in words is "one million, two hundred eighty-eight thousand, one hundred one".