1144120420 has 24 divisors (see below), whose sum is σ = 2403374400. Its totient is φ = 457510752.

The previous prime is 1144120399. The next prime is 1144120421. The reversal of 1144120420 is 240214411.

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 7 ways as a sum of consecutive naturals, for example, 84051 + ... + 96709.

It is an arithmetic number, because the mean of its divisors is an integer number (100140600).

Almost surely, 2^1144120420 is an apocalyptic number.

1144120420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1144120420 is an abundant number, since it is smaller than the sum of its proper divisors (1259253980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1144120420 is a wasteful number, since it uses less digits than its factorization.

1144120420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17187 (or 17185 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1144120420 is about 33824.8491497006. The cubic root of 1144120420 is about 1045.9010017361.

Adding to 1144120420 its reverse (240214411), we get a palindrome (1384334831).

The spelling of 1144120420 in words is "one billion, one hundred forty-four million, one hundred twenty thousand, four hundred twenty".