139436421106 has 8 divisors (see below), whose sum is σ = 221457845340. Its totient is φ = 65617139328.

The previous prime is 139436421101. The next prime is 139436421127. The reversal of 139436421106 is 601124634931.

It can be written as a sum of positive squares in 2 ways, for example, as 139308844081 + 127577025 = 373241^2 + 11295^2 .

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

It is not an unprimeable number, because it can be changed into a prime (139436421101) 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, 2050535571 + ... + 2050535638.

Almost surely, 2^139436421106 is an apocalyptic number.

139436421106 is a deficient number, since it is larger than the sum of its proper divisors (82021424234).

139436421106 is a wasteful number, since it uses less digits than its factorization.

139436421106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4101071228.

The product of its (nonzero) digits is 93312, while the sum is 40.

The spelling of 139436421106 in words is "one hundred thirty-nine billion, four hundred thirty-six million, four hundred twenty-one thousand, one hundred six".