144625121526442 has 4 divisors (see below), whose sum is σ = 216937682289666. Its totient is φ = 72312560763220.

The previous prime is 144625121526383. The next prime is 144625121526451. The reversal of 144625121526442 is 244625121526441.

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., 135152459509081 + 9472662017361 = 11625509^2 + 3077769^2 .

It is a super-2 number, since 2×144625121526442² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36156280381609 + ... + 36156280381612.

Almost surely, 2^{144625121526442} is an apocalyptic number.

144625121526442 is a deficient number, since it is larger than the sum of its proper divisors (72312560763224).

144625121526442 is an equidigital number, since it uses as much as digits as its factorization.

144625121526442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72312560763223.

The product of its digits is 3686400, while the sum is 49.

Subtracting 144625121526442 from its reverse (244625121526441), we obtain a palindrome (99999999999999).

The spelling of 144625121526442 in words is "one hundred forty-four trillion, six hundred twenty-five billion, one hundred twenty-one million, five hundred twenty-six thousand, four hundred forty-two".