121405230 has 96 divisors (see below), whose sum is σ = 334623744. Its totient is φ = 31656096.

The previous prime is 121405217. The next prime is 121405253. The reversal of 121405230 is 32504121.

121405230 is a `hidden beast` number, since 1 + 2 + 140 + 523 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 113679 + ... + 114741.

It is an arithmetic number, because the mean of its divisors is an integer number (3485664).

Almost surely, 2^121405230 is an apocalyptic number.

121405230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121405230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167311872).

121405230 is an abundant number, since it is smaller than the sum of its proper divisors (213218514).

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

121405230 is a wasteful number, since it uses less digits than its factorization.

121405230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132 (or 1120 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 121405230 is about 11018.4041494220. The cubic root of 121405230 is about 495.1602786754.

Adding to 121405230 its reverse (32504121), we get a palindrome (153909351).

The spelling of 121405230 in words is "one hundred twenty-one million, four hundred five thousand, two hundred thirty".