1144120401 has 24 divisors (see below), whose sum is σ = 1699486464. Its totient is φ = 741169440.

The previous prime is 1144120399. The next prime is 1144120421. The reversal of 1144120401 is 1040214411.

1144120401 is a `hidden beast` number, since 1 + 144 + 120 + 401 = 666.

It is not a de Polignac number, because 1144120401 - 2¹ = 1144120399 is a prime.

It is a super-2 number, since 2×1144120401² = 2618022983968801602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1144120421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 328270 + ... + 331736.

It is an arithmetic number, because the mean of its divisors is an integer number (70811936).

Almost surely, 2^1144120401 is an apocalyptic number.

It is an amenable number.

1144120401 is a deficient number, since it is larger than the sum of its proper divisors (555366063).

1144120401 is a wasteful number, since it uses less digits than its factorization.

1144120401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4501 (or 4498 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1144120401 is about 33824.8488688420. The cubic root of 1144120401 is about 1045.9009959465.

Adding to 1144120401 its reverse (1040214411), we get a palindrome (2184334812).

The spelling of 1144120401 in words is "one billion, one hundred forty-four million, one hundred twenty thousand, four hundred one".