139203129 has 8 divisors (see below), whose sum is σ = 199881472. Its totient is φ = 85663440.

The previous prime is 139203059. The next prime is 139203131. The reversal of 139203129 is 921302931.

It is a happy number.

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

It is not a de Polignac number, because 139203129 - 2¹² = 139199033 is a prime.

It is a super-2 number, since 2×139203129² = 38755022246781282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139203096 and 139203105.

It is not an unprimeable number, because it can be changed into a prime (139203179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1784617 + ... + 1784694.

It is an arithmetic number, because the mean of its divisors is an integer number (24985184).

Almost surely, 2^139203129 is an apocalyptic number.

It is an amenable number.

139203129 is a deficient number, since it is larger than the sum of its proper divisors (60678343).

139203129 is a wasteful number, since it uses less digits than its factorization.

139203129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3569327.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 139203129 is about 11798.4375660509. The cubic root of 139203129 is about 518.2623569743.

The spelling of 139203129 in words is "one hundred thirty-nine million, two hundred three thousand, one hundred twenty-nine".