2001230442434 has 4 divisors (see below), whose sum is σ = 3001845663654. Its totient is φ = 1000615221216.

The previous prime is 2001230442391. The next prime is 2001230442457. The reversal of 2001230442434 is 4342440321002.

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

It can be written as a sum of positive squares in only one way, i.e., 1316978874409 + 684251568025 = 1147597^2 + 827195^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2001230442397 and 2001230442406.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500307610607 + ... + 500307610610.

Almost surely, 2^{2001230442434} is an apocalyptic number.

2001230442434 is a deficient number, since it is larger than the sum of its proper divisors (1000615221220).

2001230442434 is a wasteful number, since it uses less digits than its factorization.

2001230442434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000615221219.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 2001230442434 its reverse (4342440321002), we get a palindrome (6343670763436).

The spelling of 2001230442434 in words is "two trillion, one billion, two hundred thirty million, four hundred forty-two thousand, four hundred thirty-four".