1145140401 has 4 divisors (see below), whose sum is σ = 1526853872. Its totient is φ = 763426932.

The previous prime is 1145140379. The next prime is 1145140421. The reversal of 1145140401 is 1040415411.

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 not a de Polignac number, because 1145140401 - 2⁷ = 1145140273 is a prime.

It is a super-2 number, since 2×1145140401² = 2622693076004881602, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1145140421) 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, 190856731 + ... + 190856736.

It is an arithmetic number, because the mean of its divisors is an integer number (381713468).

Almost surely, 2^1145140401 is an apocalyptic number.

It is an amenable number.

1145140401 is a deficient number, since it is larger than the sum of its proper divisors (381713471).

1145140401 is an equidigital number, since it uses as much as digits as its factorization.

1145140401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381713470.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 1145140401 is about 33839.9231825369. The cubic root of 1145140401 is about 1046.2117156177.

Adding to 1145140401 its reverse (1040415411), we get a palindrome (2185555812).

The spelling of 1145140401 in words is "one billion, one hundred forty-five million, one hundred forty thousand, four hundred one".