144202021420 has 24 divisors (see below), whose sum is σ = 303216029424. Its totient is φ = 57606182976.

The previous prime is 144202021409. The next prime is 144202021423. The reversal of 144202021420 is 24120202441.

It is a super-2 number, since 2×144202021420² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 144202021391 and 144202021400.

It is not an unprimeable number, because it can be changed into a prime (144202021423) 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, 4648254 + ... + 4679173.

It is an arithmetic number, because the mean of its divisors is an integer number (12634001226).

Almost surely, 2^144202021420 is an apocalyptic number.

144202021420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144202021420 is an abundant number, since it is smaller than the sum of its proper divisors (159014008004).

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

144202021420 is a wasteful number, since it uses less digits than its factorization.

144202021420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9328209 (or 9328207 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 144202021420 its reverse (24120202441), we get a palindrome (168322223861).

It can be divided in two parts, 144202021 and 420, that added together give a palindrome (144202441).

The spelling of 144202021420 in words is "one hundred forty-four billion, two hundred two million, twenty-one thousand, four hundred twenty".