121727982 has 8 divisors (see below), whose sum is σ = 243455976. Its totient is φ = 40575992.

The previous prime is 121727953. The next prime is 121727987. The reversal of 121727982 is 289727121.

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

121727982 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 121727982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121727987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10143993 + ... + 10144004.

It is an arithmetic number, because the mean of its divisors is an integer number (30431997).

Almost surely, 2^121727982 is an apocalyptic number.

121727982 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.

121727982 is a wasteful number, since it uses less digits than its factorization.

121727982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20288002.

The product of its digits is 28224, while the sum is 39.

The square root of 121727982 is about 11033.0404694264. The cubic root of 121727982 is about 495.5986797748.

The spelling of 121727982 in words is "one hundred twenty-one million, seven hundred twenty-seven thousand, nine hundred eighty-two".