4200020040442 has 4 divisors (see below), whose sum is σ = 6300030060666. Its totient is φ = 2100010020220.

The previous prime is 4200020040413. The next prime is 4200020040451. The reversal of 4200020040442 is 2440400200024.

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., 2155637667681 + 2044382372761 = 1468209^2 + 1429819^2 .

It is a super-2 number, since 2×4200020040442² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050005010109 + ... + 1050005010112.

Almost surely, 2^{4200020040442} is an apocalyptic number.

4200020040442 is a deficient number, since it is larger than the sum of its proper divisors (2100010020224).

4200020040442 is a wasteful number, since it uses less digits than its factorization.

4200020040442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100010020223.

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 4200020040442 its reverse (2440400200024), we get a palindrome (6640420240466).

The spelling of 4200020040442 in words is "four trillion, two hundred billion, twenty million, forty thousand, four hundred forty-two".