121423002400 has 144 divisors (see below), whose sum is σ = 343412020224. Its totient is φ = 41060321280.

The previous prime is 121423002397. The next prime is 121423002409. The reversal of 121423002400 is 4200324121.

It is not an unprimeable number, because it can be changed into a prime (121423002409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 260289 + ... + 557311.

It is an arithmetic number, because the mean of its divisors is an integer number (2384805696).

Almost surely, 2^121423002400 is an apocalyptic number.

121423002400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121423002400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171706010112).

121423002400 is an abundant number, since it is smaller than the sum of its proper divisors (221989017824).

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

121423002400 is a wasteful number, since it uses less digits than its factorization.

121423002400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297123 (or 297110 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 121423002400 its reverse (4200324121), we get a palindrome (125623326521).

The spelling of 121423002400 in words is "one hundred twenty-one billion, four hundred twenty-three million, two thousand, four hundred".