1144021507 has 4 divisors (see below), whose sum is σ = 1144096056. Its totient is φ = 1143946960.

The previous prime is 1144021499. The next prime is 1144021577. The reversal of 1144021507 is 7051204411.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7051204411 = 173 ⋅40758407.

It is a cyclic number.

It is not a de Polignac number, because 1144021507 - 2³ = 1144021499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1144021577) 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, 4858 + ... + 48079.

It is an arithmetic number, because the mean of its divisors is an integer number (286024014).

Almost surely, 2^1144021507 is an apocalyptic number.

1144021507 is a deficient number, since it is larger than the sum of its proper divisors (74549).

1144021507 is an equidigital number, since it uses as much as digits as its factorization.

1144021507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74548.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 1144021507 is about 33823.3869829738. The cubic root of 1144021507 is about 1045.8708603322.

Adding to 1144021507 its reverse (7051204411), we get a palindrome (8195225918).

The spelling of 1144021507 in words is "one billion, one hundred forty-four million, twenty-one thousand, five hundred seven".