121429243 has 8 divisors (see below), whose sum is σ = 130884768. Its totient is φ = 111990144.

The previous prime is 121429211. The next prime is 121429261. The reversal of 121429243 is 342924121.

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

It is a cyclic number.

It is not a de Polignac number, because 121429243 - 2⁵ = 121429211 is a prime.

It is a super-2 number, since 2×121429243² = 29490122111106098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121429043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14355 + ... + 21187.

It is an arithmetic number, because the mean of its divisors is an integer number (16360596).

Almost surely, 2^121429243 is an apocalyptic number.

121429243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121429243 is a deficient number, since it is larger than the sum of its proper divisors (9455525).

121429243 is a wasteful number, since it uses less digits than its factorization.

121429243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8213.

The product of its digits is 3456, while the sum is 28.

The square root of 121429243 is about 11019.4937724017. The cubic root of 121429243 is about 495.1929227933.

The spelling of 121429243 in words is "one hundred twenty-one million, four hundred twenty-nine thousand, two hundred forty-three".