103642113305 has 4 divisors (see below), whose sum is σ = 124370535972. Its totient is φ = 82913690640.

The previous prime is 103642113269. The next prime is 103642113313. The reversal of 103642113305 is 503311246301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 503311246301 = 88379 ⋅5694919.

It can be written as a sum of positive squares in 2 ways, for example, as 62185895641 + 41456217664 = 249371^2 + 203608^2 .

It is not a de Polignac number, because 103642113305 - 2²⁶ = 103575004441 is a prime.

It is a super-3 number, since 3×103642113305³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10364211326 + ... + 10364211335.

It is an arithmetic number, because the mean of its divisors is an integer number (31092633993).

Almost surely, 2^103642113305 is an apocalyptic number.

It is an amenable number.

103642113305 is a deficient number, since it is larger than the sum of its proper divisors (20728422667).

103642113305 is an equidigital number, since it uses as much as digits as its factorization.

103642113305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20728422666.

The product of its (nonzero) digits is 6480, while the sum is 29.

Adding to 103642113305 its reverse (503311246301), we get a palindrome (606953359606).

The spelling of 103642113305 in words is "one hundred three billion, six hundred forty-two million, one hundred thirteen thousand, three hundred five".