139121226433 has 4 divisors (see below), whose sum is σ = 158995687360. Its totient is φ = 119246765508.

The previous prime is 139121226397. The next prime is 139121226473. The reversal of 139121226433 is 334622121931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 334622121931 = 467 ⋅716535593.

It is a cyclic number.

It is not a de Polignac number, because 139121226433 - 2¹⁷ = 139121095361 is a prime.

It is a super-3 number, since 3×139121226433³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139121226392 and 139121226401.

It is not an unprimeable number, because it can be changed into a prime (139121226473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9937230453 + ... + 9937230466.

It is an arithmetic number, because the mean of its divisors is an integer number (39748921840).

Almost surely, 2^139121226433 is an apocalyptic number.

It is an amenable number.

139121226433 is a deficient number, since it is larger than the sum of its proper divisors (19874460927).

139121226433 is an equidigital number, since it uses as much as digits as its factorization.

139121226433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19874460926.

The product of its digits is 46656, while the sum is 37.

The spelling of 139121226433 in words is "one hundred thirty-nine billion, one hundred twenty-one million, two hundred twenty-six thousand, four hundred thirty-three".