144321420 has 48 divisors (see below), whose sum is σ = 404661600. Its totient is φ = 38432256.

The previous prime is 144321409. The next prime is 144321427. The reversal of 144321420 is 24123441.

It is not an unprimeable number, because it can be changed into a prime (144321427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61794 + ... + 64086.

It is an arithmetic number, because the mean of its divisors is an integer number (8430450).

Almost surely, 2^144321420 is an apocalyptic number.

144321420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144321420 is an abundant number, since it is smaller than the sum of its proper divisors (260340180).

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

144321420 is a wasteful number, since it uses less digits than its factorization.

144321420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3354 (or 3352 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 144321420 is about 12013.3850350349. The cubic root of 144321420 is about 524.5379699236.

Adding to 144321420 its reverse (24123441), we get a palindrome (168444861).

The spelling of 144321420 in words is "one hundred forty-four million, three hundred twenty-one thousand, four hundred twenty".