103170421 has 4 divisors (see below), whose sum is σ = 103338252. Its totient is φ = 103002592.

The previous prime is 103170401. The next prime is 103170427. The reversal of 103170421 is 124071301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124071301 = 2081 ⋅59621.

It can be written as a sum of positive squares in 2 ways, for example, as 35700625 + 67469796 = 5975^2 + 8214^2 .

It is a cyclic number.

It is not a de Polignac number, because 103170421 - 2⁹ = 103169909 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 (103170427) 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, 82990 + ... + 84223.

It is an arithmetic number, because the mean of its divisors is an integer number (25834563).

Almost surely, 2^103170421 is an apocalyptic number.

It is an amenable number.

103170421 is a deficient number, since it is larger than the sum of its proper divisors (167831).

103170421 is an equidigital number, since it uses as much as digits as its factorization.

103170421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167830.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 103170421 is about 10157.2841350432. The cubic root of 103170421 is about 469.0132019688.

The spelling of 103170421 in words is "one hundred three million, one hundred seventy thousand, four hundred twenty-one".