1145442401 has 4 divisors (see below), whose sum is σ = 1145628672. Its totient is φ = 1145256132.

The previous prime is 1145442373. The next prime is 1145442421. The reversal of 1145442401 is 1042445411.

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 a cyclic number.

It is not a de Polignac number, because 1145442401 - 2²⁶ = 1078333537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145442421) 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, 83585 + ... + 96318.

It is an arithmetic number, because the mean of its divisors is an integer number (286407168).

Almost surely, 2^1145442401 is an apocalyptic number.

It is an amenable number.

1145442401 is a deficient number, since it is larger than the sum of its proper divisors (186271).

1145442401 is an equidigital number, since it uses as much as digits as its factorization.

1145442401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186270.

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 1145442401 is about 33844.3850734505. The cubic root of 1145442401 is about 1046.3036776068.

Adding to 1145442401 its reverse (1042445411), we get a palindrome (2187887812).

The spelling of 1145442401 in words is "one billion, one hundred forty-five million, four hundred forty-two thousand, four hundred one".