1244141200420 has 24 divisors (see below), whose sum is σ = 2623537595448. Its totient is φ = 495591513600.

The previous prime is 1244141200417. The next prime is 1244141200543. The reversal of 1244141200420 is 240021414421.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 692959683364 + 551181517056 = 832442^2 + 742416^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129055471 + ... + 129065110.

It is an arithmetic number, because the mean of its divisors is an integer number (109314066477).

Almost surely, 2^{1244141200420} is an apocalyptic number.

1244141200420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1244141200420 is an abundant number, since it is smaller than the sum of its proper divisors (1379396395028).

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

1244141200420 is a wasteful number, since it uses less digits than its factorization.

1244141200420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258120831 (or 258120829 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 1244141200420 its reverse (240021414421), we get a palindrome (1484162614841).

The spelling of 1244141200420 in words is "one trillion, two hundred forty-four billion, one hundred forty-one million, two hundred thousand, four hundred twenty".