403042421123 has 4 divisors (see below), whose sum is σ = 412415500728. Its totient is φ = 393669341520.

The previous prime is 403042421101. The next prime is 403042421183. The reversal of 403042421123 is 321124240304.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 403042421123 - 2²² = 403038226819 is a prime.

It is a super-2 number, since 2×403042421123² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 403042421092 and 403042421101.

It is not an unprimeable number, because it can be changed into a prime (403042421183) 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, 4686539738 + ... + 4686539823.

It is an arithmetic number, because the mean of its divisors is an integer number (103103875182).

Almost surely, 2^403042421123 is an apocalyptic number.

403042421123 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

403042421123 is a deficient number, since it is larger than the sum of its proper divisors (9373079605).

403042421123 is an equidigital number, since it uses as much as digits as its factorization.

403042421123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9373079604.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 403042421123 its reverse (321124240304), we get a palindrome (724166661427).

The spelling of 403042421123 in words is "four hundred three billion, forty-two million, four hundred twenty-one thousand, one hundred twenty-three".