4042121232340 has 48 divisors (see below), whose sum is σ = 8704851760080. Its totient is φ = 1575714897920.

The previous prime is 4042121232319. The next prime is 4042121232377. The reversal of 4042121232340 is 432321212404.

It can be written as a sum of positive squares in 8 ways, for example, as 1631883612304 + 2410237620036 = 1277452^2 + 1552494^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4042121232299 and 4042121232308.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1891297 + ... + 3414856.

It is an arithmetic number, because the mean of its divisors is an integer number (181351078335).

Almost surely, 2^{4042121232340} is an apocalyptic number.

It is an amenable number.

4042121232340 is an abundant number, since it is smaller than the sum of its proper divisors (4662730527740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4042121232340 is a wasteful number, since it uses less digits than its factorization.

4042121232340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5307132 (or 5307130 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 4042121232340 its reverse (432321212404), we get a palindrome (4474442444744).

The spelling of 4042121232340 in words is "four trillion, forty-two billion, one hundred twenty-one million, two hundred thirty-two thousand, three hundred forty".