1140020401 has 4 divisors (see below), whose sum is σ = 1227714292. Its totient is φ = 1052326512.

The previous prime is 1140020383. The next prime is 1140020417. The reversal of 1140020401 is 1040200411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 443060401 + 696960000 = 21049^2 + 26400^2 .

It is a cyclic number.

It is not a de Polignac number, because 1140020401 - 2¹¹ = 1140018353 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 87693877 = 1140020401 / (1 + 1 + 4 + 0 + 0 + 2 + 0 + 4 + 0 + 1).

It is a Duffinian number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (1140020471) 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, 43846926 + ... + 43846951.

It is an arithmetic number, because the mean of its divisors is an integer number (306928573).

Almost surely, 2^1140020401 is an apocalyptic number.

It is an amenable number.

1140020401 is a deficient number, since it is larger than the sum of its proper divisors (87693891).

1140020401 is an equidigital number, since it uses as much as digits as its factorization.

1140020401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87693890.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1140020401 is about 33764.1881436530. The cubic root of 1140020401 is about 1044.6501583000.

Adding to 1140020401 its reverse (1040200411), we get a palindrome (2180220812).

The spelling of 1140020401 in words is "one billion, one hundred forty million, twenty thousand, four hundred one".