123020453 has 4 divisors (see below), whose sum is σ = 123392448. Its totient is φ = 122648460.

The previous prime is 123020441. The next prime is 123020507. The reversal of 123020453 is 354020321.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 123020453 - 2⁶ = 123020389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123020413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185501 + ... + 186162.

It is an arithmetic number, because the mean of its divisors is an integer number (30848112).

Almost surely, 2^123020453 is an apocalyptic number.

It is an amenable number.

123020453 is a deficient number, since it is larger than the sum of its proper divisors (371995).

123020453 is an equidigital number, since it uses as much as digits as its factorization.

123020453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371994.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 123020453 is about 11091.4585605321. The cubic root of 123020453 is about 497.3465472873.

Adding to 123020453 its reverse (354020321), we get a palindrome (477040774).

The spelling of 123020453 in words is "one hundred twenty-three million, twenty thousand, four hundred fifty-three".