121405430 has 8 divisors (see below), whose sum is σ = 218529792. Its totient is φ = 48562168.

The previous prime is 121405423. The next prime is 121405439. The reversal of 121405430 is 34504121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121405439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6070262 + ... + 6070281.

It is an arithmetic number, because the mean of its divisors is an integer number (27316224).

Almost surely, 2^121405430 is an apocalyptic number.

121405430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121405430 is a deficient number, since it is larger than the sum of its proper divisors (97124362).

121405430 is a wasteful number, since it uses less digits than its factorization.

121405430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12140550.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 121405430 is about 11018.4132251427. The cubic root of 121405430 is about 495.1605505802.

Adding to 121405430 its reverse (34504121), we get a palindrome (155909551).

The spelling of 121405430 in words is "one hundred twenty-one million, four hundred five thousand, four hundred thirty".