145139002438 has 8 divisors (see below), whose sum is σ = 217766125080. Its totient is φ = 72550294080.

The previous prime is 145139002403. The next prime is 145139002439. The reversal of 145139002438 is 834200931541.

It is a happy number.

145139002438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 145139002438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145139002439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9594123 + ... + 9609238.

It is an arithmetic number, because the mean of its divisors is an integer number (27220765635).

Almost surely, 2^145139002438 is an apocalyptic number.

145139002438 is a deficient number, since it is larger than the sum of its proper divisors (72627122642).

145139002438 is a wasteful number, since it uses less digits than its factorization.

145139002438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19207142.

The product of its (nonzero) digits is 103680, while the sum is 40.

Adding to 145139002438 its reverse (834200931541), we get a palindrome (979339933979).

The spelling of 145139002438 in words is "one hundred forty-five billion, one hundred thirty-nine million, two thousand, four hundred thirty-eight".