144002821428 has 72 divisors (see below), whose sum is σ = 392931302400. Its totient is φ = 44330696256.

The previous prime is 144002821387. The next prime is 144002821429. The reversal of 144002821428 is 824128200441.

It is a happy number.

144002821428 is a `hidden beast` number, since 14 + 400 + 2 + 8 + 214 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 144002821392 and 144002821401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144002821429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2974548 + ... + 3022571.

It is an arithmetic number, because the mean of its divisors is an integer number (5457379200).

Almost surely, 2^144002821428 is an apocalyptic number.

144002821428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

144002821428 is an abundant number, since it is smaller than the sum of its proper divisors (248928480972).

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

144002821428 is a wasteful number, since it uses less digits than its factorization.

144002821428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5997181 (or 5997176 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 36.

The spelling of 144002821428 in words is "one hundred forty-four billion, two million, eight hundred twenty-one thousand, four hundred twenty-eight".