144001420 has 48 divisors (see below), whose sum is σ = 310464000. Its totient is φ = 56078784.

The previous prime is 144001409. The next prime is 144001423. The reversal of 144001420 is 24100441.

It is a junction number, because it is equal to n+sod(n) for n = 144001394 and 144001403.

It is not an unprimeable number, because it can be changed into a prime (144001423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288331 + ... + 288829.

It is an arithmetic number, because the mean of its divisors is an integer number (6468000).

Almost surely, 2^144001420 is an apocalyptic number.

144001420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144001420 is an abundant number, since it is smaller than the sum of its proper divisors (166462580).

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

144001420 is a wasteful number, since it uses less digits than its factorization.

144001420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862 (or 860 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 144001420 is about 12000.0591665208. The cubic root of 144001420 is about 524.1500017309.

Adding to 144001420 its reverse (24100441), we get a palindrome (168101861).

The spelling of 144001420 in words is "one hundred forty-four million, one thousand, four hundred twenty".