123400254400 has 42 divisors (see below), whose sum is σ = 303641754920. Its totient is φ = 49360101120.

The previous prime is 123400254371. The next prime is 123400254409. The reversal of 123400254400 is 4452004321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123400254409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38560980 + ... + 38564179.

Almost surely, 2^123400254400 is an apocalyptic number.

123400254400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123400254400 is an abundant number, since it is smaller than the sum of its proper divisors (180241500520).

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

123400254400 is an equidigital number, since it uses as much as digits as its factorization.

123400254400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77125181 (or 77125166 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 123400254400 its reverse (4452004321), we get a palindrome (127852258721).

The spelling of 123400254400 in words is "one hundred twenty-three billion, four hundred million, two hundred fifty-four thousand, four hundred".