103139629 has 4 divisors (see below), whose sum is σ = 109206684. Its totient is φ = 97072576.

The previous prime is 103139591. The next prime is 103139651. The reversal of 103139629 is 926931301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 926931301 = 83 ⋅11167847.

It can be written as a sum of positive squares in 2 ways, for example, as 73925604 + 29214025 = 8598^2 + 5405^2 .

It is a cyclic number.

It is not a de Polignac number, because 103139629 - 2⁷ = 103139501 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103139594 and 103139603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103139669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3033502 + ... + 3033535.

It is an arithmetic number, because the mean of its divisors is an integer number (27301671).

Almost surely, 2^103139629 is an apocalyptic number.

It is an amenable number.

103139629 is a deficient number, since it is larger than the sum of its proper divisors (6067055).

103139629 is an equidigital number, since it uses as much as digits as its factorization.

103139629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6067054.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 103139629 is about 10155.7682624211. The cubic root of 103139629 is about 468.9665371354.

The spelling of 103139629 in words is "one hundred three million, one hundred thirty-nine thousand, six hundred twenty-nine".