1230121043 has 16 divisors (see below), whose sum is σ = 1299602880. Its totient is φ = 1162551936.

The previous prime is 1230121021. The next prime is 1230121097. The reversal of 1230121043 is 3401210321.

It is a cyclic number.

It is not a de Polignac number, because 1230121043 - 2²⁴ = 1213343827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230121643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 993821 + ... + 995057.

It is an arithmetic number, because the mean of its divisors is an integer number (81225180).

Almost surely, 2^1230121043 is an apocalyptic number.

1230121043 is a deficient number, since it is larger than the sum of its proper divisors (69481837).

1230121043 is a wasteful number, since it uses less digits than its factorization.

1230121043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1966.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1230121043 is about 35073.0814585773. The cubic root of 1230121043 is about 1071.4764150056.

Adding to 1230121043 its reverse (3401210321), we get a palindrome (4631331364).

The spelling of 1230121043 in words is "one billion, two hundred thirty million, one hundred twenty-one thousand, forty-three".