121434404 has 48 divisors (see below), whose sum is σ = 263424000. Its totient is φ = 47696256.

The previous prime is 121434403. The next prime is 121434419. The reversal of 121434404 is 404434121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 121434404.

It is not an unprimeable number, because it can be changed into a prime (121434403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53117 + ... + 55355.

It is an arithmetic number, because the mean of its divisors is an integer number (5488000).

Almost surely, 2^121434404 is an apocalyptic number.

121434404 is a gapful number since it is divisible by the number (14) 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 121434404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131712000).

121434404 is an abundant number, since it is smaller than the sum of its proper divisors (141989596).

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

121434404 is a wasteful number, since it uses less digits than its factorization.

121434404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2412 (or 2410 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 121434404 is about 11019.7279458252. The cubic root of 121434404 is about 495.1999382766.

Adding to 121434404 its reverse (404434121), we get a palindrome (525868525).

The spelling of 121434404 in words is "one hundred twenty-one million, four hundred thirty-four thousand, four hundred four".