144442220333402 has 4 divisors (see below), whose sum is σ = 216663330500106. Its totient is φ = 72221110166700.

The previous prime is 144442220333399. The next prime is 144442220333443. The reversal of 144442220333402 is 204333022244441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 92585212538641 + 51857007794761 = 9622121^2 + 7201181^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36110555083349 + ... + 36110555083352.

Almost surely, 2^{144442220333402} is an apocalyptic number.

144442220333402 is a deficient number, since it is larger than the sum of its proper divisors (72221110166704).

144442220333402 is an equidigital number, since it uses as much as digits as its factorization.

144442220333402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72221110166703.

The product of its (nonzero) digits is 442368, while the sum is 38.

Adding to 144442220333402 its reverse (204333022244441), we get a palindrome (348775242577843).

The spelling of 144442220333402 in words is "one hundred forty-four trillion, four hundred forty-two billion, two hundred twenty million, three hundred thirty-three thousand, four hundred two".