123453225440 has 48 divisors (see below), whose sum is σ = 291727133712. Its totient is φ = 49369626624.

The previous prime is 123453225341. The next prime is 123453225481. The reversal of 123453225440 is 44522354321.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 123453225440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 604967 + ... + 782873.

It is an arithmetic number, because the mean of its divisors is an integer number (6077648619).

Almost surely, 2^123453225440 is an apocalyptic number.

123453225440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123453225440 is an abundant number, since it is smaller than the sum of its proper divisors (168273908272).

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

123453225440 is a wasteful number, since it uses less digits than its factorization.

123453225440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182259 (or 182251 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 123453225440 its reverse (44522354321), we get a palindrome (167975579761).

The spelling of 123453225440 in words is "one hundred twenty-three billion, four hundred fifty-three million, two hundred twenty-five thousand, four hundred forty".