103405400421 has 32 divisors (see below), whose sum is σ = 146843394048. Its totient is φ = 64500360960.

The previous prime is 103405400411. The next prime is 103405400447. The reversal of 103405400421 is 124004504301.

It is not a de Polignac number, because 103405400421 - 2²⁶ = 103338291557 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 103405400391 and 103405400400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103405400411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22859866 + ... + 22864388.

It is an arithmetic number, because the mean of its divisors is an integer number (4588856064).

Almost surely, 2^103405400421 is an apocalyptic number.

It is an amenable number.

103405400421 is a deficient number, since it is larger than the sum of its proper divisors (43437993627).

103405400421 is a wasteful number, since it uses less digits than its factorization.

103405400421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7081.

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 103405400421 its reverse (124004504301), we get a palindrome (227409904722).

The spelling of 103405400421 in words is "one hundred three billion, four hundred five million, four hundred thousand, four hundred twenty-one".