139423454036 has 6 divisors (see below), whose sum is σ = 243991044570. Its totient is φ = 69711727016.

The previous prime is 139423454029. The next prime is 139423454039. The reversal of 139423454036 is 630454324931.

It can be written as a sum of positive squares in only one way, i.e., 136264339600 + 3159114436 = 369140^2 + 56206^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139423454039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17427931751 + ... + 17427931758.

It is an arithmetic number, because the mean of its divisors is an integer number (40665174095).

Almost surely, 2^139423454036 is an apocalyptic number.

It is an amenable number.

139423454036 is a deficient number, since it is larger than the sum of its proper divisors (104567590534).

139423454036 is a wasteful number, since it uses less digits than its factorization.

139423454036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34855863513 (or 34855863511 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 44.

Adding to 139423454036 its reverse (630454324931), we get a palindrome (769877778967).

The spelling of 139423454036 in words is "one hundred thirty-nine billion, four hundred twenty-three million, four hundred fifty-four thousand, thirty-six".