144321021442 has 16 divisors (see below), whose sum is σ = 233297850240. Its totient is φ = 66562875792.

The previous prime is 144321021419. The next prime is 144321021469. The reversal of 144321021442 is 244120123441.

It is a self number, because there is not a number n which added to its sum of digits gives 144321021442.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1913392 + ... + 1987387.

It is an arithmetic number, because the mean of its divisors is an integer number (14581115640).

Almost surely, 2^144321021442 is an apocalyptic number.

144321021442 is a deficient number, since it is larger than the sum of its proper divisors (88976828798).

144321021442 is a wasteful number, since it uses less digits than its factorization.

144321021442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3902217.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 144321021442 its reverse (244120123441), we get a palindrome (388441144883).

The spelling of 144321021442 in words is "one hundred forty-four billion, three hundred twenty-one million, twenty-one thousand, four hundred forty-two".