1140401 has 4 divisors (see below), whose sum is σ = 1161972. Its totient is φ = 1118832.

The previous prime is 1140389. The next prime is 1140413. The reversal of 1140401 is 1040411.

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

It is an interprime number because it is at equal distance from previous prime (1140389) and next prime (1140413).

It can be written as a sum of positive squares in 2 ways, for example, as 616225 + 524176 = 785^2 + 724^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1140401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1140421) 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, 10706 + ... + 10811.

It is an arithmetic number, because the mean of its divisors is an integer number (290493).

2^1140401 is an apocalyptic number.

It is an amenable number.

1140401 is a deficient number, since it is larger than the sum of its proper divisors (21571).

1140401 is an equidigital number, since it uses as much as digits as its factorization.

1140401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21570.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1140401 is about 1067.8955941477. The cubic root of 1140401 is about 104.4766398491.

Adding to 1140401 its reverse (1040411), we get a palindrome (2180812).

The spelling of 1140401 in words is "one million, one hundred forty thousand, four hundred one".