121434005 has 64 divisors (see below), whose sum is σ = 191116800. Its totient is φ = 73382400.

The previous prime is 121433989. The next prime is 121434007. The reversal of 121434005 is 500434121.

It is not a de Polignac number, because 121434005 - 2⁴ = 121433989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121434007) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 773387 + ... + 773543.

It is an arithmetic number, because the mean of its divisors is an integer number (2986200).

Almost surely, 2^121434005 is an apocalyptic number.

It is an amenable number.

121434005 is a deficient number, since it is larger than the sum of its proper divisors (69682795).

121434005 is a wasteful number, since it uses less digits than its factorization.

121434005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235 (or 221 counting only the distinct ones).

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

The square root of 121434005 is about 11019.7098419151. The cubic root of 121434005 is about 495.1993959125.

Adding to 121434005 its reverse (500434121), we get a palindrome (621868126).

The spelling of 121434005 in words is "one hundred twenty-one million, four hundred thirty-four thousand, five".