123021454452 has 24 divisors (see below), whose sum is σ = 309130834656. Its totient is φ = 37852755168.

The previous prime is 123021454427. The next prime is 123021454453. The reversal of 123021454452 is 254454120321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123021454453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394299378 + ... + 394299689.

It is an arithmetic number, because the mean of its divisors is an integer number (12880451444).

Almost surely, 2^123021454452 is an apocalyptic number.

123021454452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123021454452 is an abundant number, since it is smaller than the sum of its proper divisors (186109380204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123021454452 is a wasteful number, since it uses less digits than its factorization.

123021454452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788599087 (or 788599085 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 123021454452 its reverse (254454120321), we get a palindrome (377475574773).

The spelling of 123021454452 in words is "one hundred twenty-three billion, twenty-one million, four hundred fifty-four thousand, four hundred fifty-two".