121809342 has 24 divisors (see below), whose sum is σ = 257120136. Its totient is φ = 38465424.

The previous prime is 121809341. The next prime is 121809379. The reversal of 121809342 is 243908121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121809341) 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, 25953 + ... + 30284.

It is an arithmetic number, because the mean of its divisors is an integer number (10713339).

Almost surely, 2^121809342 is an apocalyptic number.

121809342 is an abundant number, since it is smaller than the sum of its proper divisors (135310794).

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

121809342 is a wasteful number, since it uses less digits than its factorization.

121809342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56280 (or 56261 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 121809342 is about 11036.7269604716. The cubic root of 121809342 is about 495.7090705216.

The spelling of 121809342 in words is "one hundred twenty-one million, eight hundred nine thousand, three hundred forty-two".