121942869 has 8 divisors (see below), whose sum is σ = 162719040. Its totient is φ = 81230976.

The previous prime is 121942841. The next prime is 121942907. The reversal of 121942869 is 968249121.

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

It is not a de Polignac number, because 121942869 - 2¹¹ = 121940821 is a prime.

It is a super-2 number, since 2×121942869² = 29740126599902322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121942869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121942069) 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, 11452 + ... + 19365.

It is an arithmetic number, because the mean of its divisors is an integer number (20339880).

Almost surely, 2^121942869 is an apocalyptic number.

It is an amenable number.

121942869 is a deficient number, since it is larger than the sum of its proper divisors (40776171).

121942869 is a wasteful number, since it uses less digits than its factorization.

121942869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32139.

The product of its digits is 62208, while the sum is 42.

The square root of 121942869 is about 11042.7745154920. The cubic root of 121942869 is about 495.8901359275.

The spelling of 121942869 in words is "one hundred twenty-one million, nine hundred forty-two thousand, eight hundred sixty-nine".