103954921 has 6 divisors (see below), whose sum is σ = 120927210. Its totient is φ = 89104176.

The previous prime is 103954901. The next prime is 103954931. The reversal of 103954921 is 129459301.

It can be written as a sum of positive squares in only one way, i.e., 103306896 + 648025 = 10164^2 + 805^2 .

It is not a de Polignac number, because 103954921 - 2¹⁹ = 103430633 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 (103954901) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1060716 + ... + 1060813.

It is an arithmetic number, because the mean of its divisors is an integer number (20154535).

Almost surely, 2^103954921 is an apocalyptic number.

It is an amenable number.

103954921 is a deficient number, since it is larger than the sum of its proper divisors (16972289).

103954921 is an equidigital number, since it uses as much as digits as its factorization.

103954921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121543 (or 2121536 counting only the distinct ones).

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

The square root of 103954921 is about 10195.8286078180. The cubic root of 103954921 is about 470.1989816885.

The spelling of 103954921 in words is "one hundred three million, nine hundred fifty-four thousand, nine hundred twenty-one".