121839734 has 16 divisors (see below), whose sum is σ = 190532736. Its totient is φ = 58368000.

The previous prime is 121839733. The next prime is 121839749. The reversal of 121839734 is 437938121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121839733) 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, 3467 + ... + 15990.

It is an arithmetic number, because the mean of its divisors is an integer number (11908296).

Almost surely, 2^121839734 is an apocalyptic number.

121839734 is a deficient number, since it is larger than the sum of its proper divisors (68693002).

121839734 is a wasteful number, since it uses less digits than its factorization.

121839734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19591.

The product of its digits is 36288, while the sum is 38.

The square root of 121839734 is about 11038.1037320728. The cubic root of 121839734 is about 495.7502943364.

The spelling of 121839734 in words is "one hundred twenty-one million, eight hundred thirty-nine thousand, seven hundred thirty-four".