103161421 has 4 divisors (see below), whose sum is σ = 112539744. Its totient is φ = 93783100.

The previous prime is 103161391. The next prime is 103161427. The reversal of 103161421 is 124161301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 103161421 - 2⁷ = 103161293 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 (103161427) 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, 4689145 + ... + 4689166.

It is an arithmetic number, because the mean of its divisors is an integer number (28134936).

Almost surely, 2^103161421 is an apocalyptic number.

103161421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

103161421 is a deficient number, since it is larger than the sum of its proper divisors (9378323).

103161421 is an equidigital number, since it uses as much as digits as its factorization.

103161421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9378322.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 103161421 is about 10156.8410935684. The cubic root of 103161421 is about 468.9995635586. Note that the first 3 decimals are identical.

The spelling of 103161421 in words is "one hundred three million, one hundred sixty-one thousand, four hundred twenty-one".