144420233402 has 16 divisors (see below), whose sum is σ = 217849573032. Its totient is φ = 71803791360.

The previous prime is 144420233371. The next prime is 144420233407. The reversal of 144420233402 is 204332024441.

It can be written as a sum of positive squares in 4 ways, for example, as 60772603441 + 83647629961 = 246521^2 + 289219^2 .

It is not an unprimeable number, because it can be changed into a prime (144420233407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5756678 + ... + 5781710.

Almost surely, 2^144420233402 is an apocalyptic number.

144420233402 is a deficient number, since it is larger than the sum of its proper divisors (73429339630).

144420233402 is a wasteful number, since it uses less digits than its factorization.

144420233402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41153.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 144420233402 its reverse (204332024441), we get a palindrome (348752257843).

The spelling of 144420233402 in words is "one hundred forty-four billion, four hundred twenty million, two hundred thirty-three thousand, four hundred two".