121412424 has 64 divisors (see below), whose sum is σ = 348278400. Its totient is φ = 34550784.

The previous prime is 121412411. The next prime is 121412437. The reversal of 121412424 is 424214121.

It is an interprime number because it is at equal distance from previous prime (121412411) and next prime (121412437).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 121412424.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45232 + ... + 47840.

It is an arithmetic number, because the mean of its divisors is an integer number (5441850).

Almost surely, 2^121412424 is an apocalyptic number.

121412424 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 121412424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174139200).

121412424 is an abundant number, since it is smaller than the sum of its proper divisors (226865976).

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

121412424 is a wasteful number, since it uses less digits than its factorization.

121412424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2902 (or 2898 counting only the distinct ones).

The product of its digits is 512, while the sum is 21.

The square root of 121412424 is about 11018.7305983947. The cubic root of 121412424 is about 495.1700589040.

Adding to 121412424 its reverse (424214121), we get a palindrome (545626545).

The spelling of 121412424 in words is "one hundred twenty-one million, four hundred twelve thousand, four hundred twenty-four".