121042434 has 8 divisors (see below), whose sum is σ = 242084880. Its totient is φ = 40347476.

The previous prime is 121042417. The next prime is 121042501. The reversal of 121042434 is 434240121.

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

121042434 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 121042434.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10086864 + ... + 10086875.

It is an arithmetic number, because the mean of its divisors is an integer number (30260610).

Almost surely, 2^121042434 is an apocalyptic number.

121042434 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

121042434 is a wasteful number, since it uses less digits than its factorization.

121042434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20173744.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 121042434 is about 11001.9286491051. The cubic root of 121042434 is about 494.6665563757. Note that the first 3 decimals are identical.

Adding to 121042434 its reverse (434240121), we get a palindrome (555282555).

The spelling of 121042434 in words is "one hundred twenty-one million, forty-two thousand, four hundred thirty-four".