4004212420442 has 48 divisors (see below), whose sum is σ = 6513082120440. Its totient is φ = 1845486489600.

The previous prime is 4004212420423. The next prime is 4004212420447. The reversal of 4004212420442 is 2440242124004.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 897739195081 + 3106473225361 = 947491^2 + 1762519^2 .

It is not an unprimeable number, because it can be changed into a prime (4004212420447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1282988642 + ... + 1282991762.

Almost surely, 2^{4004212420442} is an apocalyptic number.

4004212420442 is a deficient number, since it is larger than the sum of its proper divisors (2508869699998).

4004212420442 is a wasteful number, since it uses less digits than its factorization.

4004212420442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7299 (or 7286 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 29.

Adding to 4004212420442 its reverse (2440242124004), we get a palindrome (6444454544446).

The spelling of 4004212420442 in words is "four trillion, four billion, two hundred twelve million, four hundred twenty thousand, four hundred forty-two".