121042734 has 16 divisors (see below), whose sum is σ = 242862672. Its totient is φ = 40218048.

The previous prime is 121042679. The next prime is 121042739. The reversal of 121042734 is 437240121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121042739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30349 + ... + 34104.

It is an arithmetic number, because the mean of its divisors is an integer number (15178917).

Almost surely, 2^121042734 is an apocalyptic number.

121042734 is an abundant number, since it is smaller than the sum of its proper divisors (121819938).

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

121042734 is a wasteful number, since it uses less digits than its factorization.

121042734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64771.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 121042734 is about 11001.9422830698. The cubic root of 121042734 is about 494.6669650474. Note that the first 3 decimals are identical.

Adding to 121042734 its reverse (437240121), we get a palindrome (558282855).

The spelling of 121042734 in words is "one hundred twenty-one million, forty-two thousand, seven hundred thirty-four".