121002943 has 4 divisors (see below), whose sum is σ = 121107448. Its totient is φ = 120898440.

The previous prime is 121002911. The next prime is 121003007. The reversal of 121002943 is 349200121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 349200121 = 3119 ⋅111959.

It is a cyclic number.

It is not a de Polignac number, because 121002943 - 2⁵ = 121002911 is a prime.

It is a super-2 number, since 2×121002943² = 29283424429322498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121002643) 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 3 ways as a sum of consecutive naturals, for example, 50496 + ... + 52837.

It is an arithmetic number, because the mean of its divisors is an integer number (30276862).

Almost surely, 2^121002943 is an apocalyptic number.

121002943 is a deficient number, since it is larger than the sum of its proper divisors (104505).

121002943 is a wasteful number, since it uses less digits than its factorization.

121002943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104504.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 121002943 is about 11000.1337719139. The cubic root of 121002943 is about 494.6127543021.

The spelling of 121002943 in words is "one hundred twenty-one million, two thousand, nine hundred forty-three".