121423120 has 120 divisors (see below), whose sum is σ = 349638336. Its totient is φ = 38398464.

The previous prime is 121423111. The next prime is 121423151. The reversal of 121423120 is 21324121.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 121423094 and 121423103.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93999 + ... + 95281.

Almost surely, 2^121423120 is an apocalyptic number.

121423120 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 121423120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174819168).

121423120 is an abundant number, since it is smaller than the sum of its proper divisors (228215216).

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

121423120 is a wasteful number, since it uses less digits than its factorization.

121423120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329 (or 1310 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 121423120 is about 11019.2159430696. The cubic root of 121423120 is about 495.1845993803.

Adding to 121423120 its reverse (21324121), we get a palindrome (142747241).

The spelling of 121423120 in words is "one hundred twenty-one million, four hundred twenty-three thousand, one hundred twenty".