144105402 has 32 divisors (see below), whose sum is σ = 329756544. Its totient is φ = 41126400.

The previous prime is 144105389. The next prime is 144105421. The reversal of 144105402 is 204501441.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55902 + ... + 58422.

It is an arithmetic number, because the mean of its divisors is an integer number (10304892).

Almost surely, 2^144105402 is an apocalyptic number.

144105402 is an abundant number, since it is smaller than the sum of its proper divisors (185651142).

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

144105402 is a wasteful number, since it uses less digits than its factorization.

144105402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3894.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 144105402 is about 12004.3909466495. The cubic root of 144105402 is about 524.2761325525.

Adding to 144105402 its reverse (204501441), we get a palindrome (348606843).

The spelling of 144105402 in words is "one hundred forty-four million, one hundred five thousand, four hundred two".