1240801 has 4 divisors (see below), whose sum is σ = 1261204. Its totient is φ = 1220400.

The previous prime is 1240793. The next prime is 1240807. The reversal of 1240801 is 1080421.

1240801 = 34² + 35² + ... + 155².

It is a happy number.

1240801 is nontrivially palindromic in base 4.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1080421 = 233 ⋅4637.

It can be written as a sum of positive squares in 2 ways, for example, as 336400 + 904401 = 580^2 + 951^2 .

It is a cyclic number.

It is not a de Polignac number, because 1240801 - 2³ = 1240793 is a prime.

It is a Duffinian number.

1240801 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1240807) 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, 10110 + ... + 10231.

It is an arithmetic number, because the mean of its divisors is an integer number (315301).

2^1240801 is an apocalyptic number.

1240801 is the 705-th centered pentagonal number.

It is an amenable number.

1240801 is a deficient number, since it is larger than the sum of its proper divisors (20403).

1240801 is an equidigital number, since it uses as much as digits as its factorization.

1240801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20402.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1240801 is about 1113.9124741199. The cubic root of 1240801 is about 107.4568350227.

The spelling of 1240801 in words is "one million, two hundred forty thousand, eight hundred one".