121210434 has 24 divisors (see below), whose sum is σ = 271095552. Its totient is φ = 39099960.

The previous prime is 121210433. The next prime is 121210469. The reversal of 121210434 is 434012121.

121210434 is a `hidden beast` number, since 1 + 21 + 210 + 434 = 666.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121210433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108054 + ... + 109169.

It is an arithmetic number, because the mean of its divisors is an integer number (11295648).

Almost surely, 2^121210434 is an apocalyptic number.

121210434 is an abundant number, since it is smaller than the sum of its proper divisors (149885118).

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

121210434 is a wasteful number, since it uses less digits than its factorization.

121210434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217262 (or 217259 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 121210434 is about 11009.5610266713. The cubic root of 121210434 is about 494.8953069069.

Adding to 121210434 its reverse (434012121), we get a palindrome (555222555).

The spelling of 121210434 in words is "one hundred twenty-one million, two hundred ten thousand, four hundred thirty-four".