121203043 has 4 divisors (see below), whose sum is σ = 130526368. Its totient is φ = 111879720.

The previous prime is 121203041. The next prime is 121203079. The reversal of 121203043 is 340302121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121203043 - 2¹ = 121203041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121203041) 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, 4661643 + ... + 4661668.

It is an arithmetic number, because the mean of its divisors is an integer number (32631592).

Almost surely, 2^121203043 is an apocalyptic number.

121203043 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121203043 is a deficient number, since it is larger than the sum of its proper divisors (9323325).

121203043 is an equidigital number, since it uses as much as digits as its factorization.

121203043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9323324.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 121203043 is about 11009.2253587616. The cubic root of 121203043 is about 494.8852476916.

Adding to 121203043 its reverse (340302121), we get a palindrome (461505164).

The spelling of 121203043 in words is "one hundred twenty-one million, two hundred three thousand, forty-three".