103453420123 has 4 divisors (see below), whose sum is σ = 103455572328. Its totient is φ = 103451267920.

The previous prime is 103453420121. The next prime is 103453420159. The reversal of 103453420123 is 321024354301.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321024354301 = 7 ⋅45860622043.

It is a cyclic number.

It is not a de Polignac number, because 103453420123 - 2¹ = 103453420121 is a prime.

It is a super-2 number, since 2×103453420123² (a number of 23 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 = 103453420091 and 103453420100.

It is not an unprimeable number, because it can be changed into a prime (103453420121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1002313 + ... + 1100698.

It is an arithmetic number, because the mean of its divisors is an integer number (25863893082).

Almost surely, 2^103453420123 is an apocalyptic number.

103453420123 is a deficient number, since it is larger than the sum of its proper divisors (2152205).

103453420123 is an equidigital number, since it uses as much as digits as its factorization.

103453420123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2152204.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 103453420123 its reverse (321024354301), we get a palindrome (424477774424).

The spelling of 103453420123 in words is "one hundred three billion, four hundred fifty-three million, four hundred twenty thousand, one hundred twenty-three".