4009234340842 has 4 divisors (see below), whose sum is σ = 6013851511266. Its totient is φ = 2004617170420.

The previous prime is 4009234340831. The next prime is 4009234340843. The reversal of 4009234340842 is 2480434329004.

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., 2192505065521 + 1816729275321 = 1480711^2 + 1347861^2 .

It is a super-3 number, since 3×4009234340842³ (a number of 39 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (4009234340843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002308585209 + ... + 1002308585212.

Almost surely, 2^{4009234340842} is an apocalyptic number.

4009234340842 is a deficient number, since it is larger than the sum of its proper divisors (2004617170424).

4009234340842 is a wasteful number, since it uses less digits than its factorization.

4009234340842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2004617170423.

The product of its (nonzero) digits is 663552, while the sum is 43.

Adding to 4009234340842 its reverse (2480434329004), we get a palindrome (6489668669846).

The spelling of 4009234340842 in words is "four trillion, nine billion, two hundred thirty-four million, three hundred forty thousand, eight hundred forty-two".