103151421 has 8 divisors (see below), whose sum is σ = 152816960. Its totient is φ = 68767596.

The previous prime is 103151413. The next prime is 103151431. The reversal of 103151421 is 124151301.

It is not a de Polignac number, because 103151421 - 2³ = 103151413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103151394 and 103151403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103151431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1910185 + ... + 1910238.

It is an arithmetic number, because the mean of its divisors is an integer number (19102120).

Almost surely, 2^103151421 is an apocalyptic number.

It is an amenable number.

103151421 is a deficient number, since it is larger than the sum of its proper divisors (49665539).

103151421 is an equidigital number, since it uses as much as digits as its factorization.

103151421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3820432 (or 3820426 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 103151421 is about 10156.3488025963. The cubic root of 103151421 is about 468.9844088391.

Subtracting from 103151421 its product of nonzero digits (120), we obtain a palindrome (103151301).

The spelling of 103151421 in words is "one hundred three million, one hundred fifty-one thousand, four hundred twenty-one".