101920103 has 4 divisors (see below), whose sum is σ = 101962608. Its totient is φ = 101877600.

The previous prime is 101920097. The next prime is 101920109. The reversal of 101920103 is 301029101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301029101 = 13513 ⋅22277.

It is an interprime number because it is at equal distance from previous prime (101920097) and next prime (101920109).

It is a cyclic number.

It is not a de Polignac number, because 101920103 - 2¹⁴ = 101903719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101920109) 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, 17426 + ... + 22527.

It is an arithmetic number, because the mean of its divisors is an integer number (25490652).

Almost surely, 2^101920103 is an apocalyptic number.

101920103 is a deficient number, since it is larger than the sum of its proper divisors (42505).

101920103 is an equidigital number, since it uses as much as digits as its factorization.

101920103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42504.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 101920103 is about 10095.5486725586. The cubic root of 101920103 is about 467.1108458547.

Adding to 101920103 its reverse (301029101), we get a palindrome (402949204).

The spelling of 101920103 in words is "one hundred one million, nine hundred twenty thousand, one hundred three".