121402368 has 88 divisors (see below), whose sum is σ = 359616960. Its totient is φ = 40458240.

The previous prime is 121402367. The next prime is 121402427. The reversal of 121402368 is 863204121.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121402367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25453 + ... + 29843.

Almost surely, 2^121402368 is an apocalyptic number.

121402368 is a gapful number since it is divisible by the number (18) 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 121402368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179808480).

121402368 is an abundant number, since it is smaller than the sum of its proper divisors (238214592).

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

121402368 is an equidigital number, since it uses as much as digits as its factorization.

121402368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4420 (or 4396 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 121402368 is about 11018.2742750396. The cubic root of 121402368 is about 495.1563876848.

Adding to 121402368 its reverse (863204121), we get a palindrome (984606489).

The spelling of 121402368 in words is "one hundred twenty-one million, four hundred two thousand, three hundred sixty-eight".