103040040421 has 4 divisors (see below), whose sum is σ = 103040745952. Its totient is φ = 103039334892.

The previous prime is 103040040403. The next prime is 103040040487. The reversal of 103040040421 is 124040040301.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103040040421 is a prime.

It is a super-2 number, since 2×103040040421² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103040040491) 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, 43065 + ... + 455998.

It is an arithmetic number, because the mean of its divisors is an integer number (25760186488).

Almost surely, 2^103040040421 is an apocalyptic number.

It is an amenable number.

103040040421 is a deficient number, since it is larger than the sum of its proper divisors (705531).

103040040421 is an equidigital number, since it uses as much as digits as its factorization.

103040040421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705530.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 103040040421 its reverse (124040040301), we get a palindrome (227080080722).

The spelling of 103040040421 in words is "one hundred three billion, forty million, forty thousand, four hundred twenty-one".