121134420 has 96 divisors (see below), whose sum is σ = 411143040. Its totient is φ = 29364480.

The previous prime is 121134407. The next prime is 121134437. The reversal of 121134420 is 24431121.

121134420 is a `hidden beast` number, since 1 + 211 + 34 + 420 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 121134393 and 121134402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4257 + ... + 16136.

It is an arithmetic number, because the mean of its divisors is an integer number (4282740).

Almost surely, 2^121134420 is an apocalyptic number.

121134420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121134420 is an abundant number, since it is smaller than the sum of its proper divisors (290008620).

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

121134420 is a wasteful number, since it uses less digits than its factorization.

121134420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20422 (or 20414 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 121134420 is about 11006.1083040283. The cubic root of 121134420 is about 494.7918316606.

Adding to 121134420 its reverse (24431121), we get a palindrome (145565541).

The spelling of 121134420 in words is "one hundred twenty-one million, one hundred thirty-four thousand, four hundred twenty".