139054129 has 4 divisors (see below), whose sum is σ = 139207680. Its totient is φ = 138900580.

The previous prime is 139054121. The next prime is 139054151. The reversal of 139054129 is 921450931.

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: 921450931 = 8423 ⋅109397.

It is a cyclic number.

It is not a de Polignac number, because 139054129 - 2³ = 139054121 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 139054094 and 139054103.

It is not an unprimeable number, because it can be changed into a prime (139054121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75409 + ... + 77230.

It is an arithmetic number, because the mean of its divisors is an integer number (34801920).

Almost surely, 2^139054129 is an apocalyptic number.

It is an amenable number.

139054129 is a deficient number, since it is larger than the sum of its proper divisors (153551).

139054129 is an equidigital number, since it uses as much as digits as its factorization.

139054129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153550.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 139054129 is about 11792.1214800391. The cubic root of 139054129 is about 518.0773787101.

The spelling of 139054129 in words is "one hundred thirty-nine million, fifty-four thousand, one hundred twenty-nine".