4040420042 has 8 divisors (see below), whose sum is σ = 6128727300. Its totient is φ = 1997510944.

The previous prime is 4040420011. The next prime is 4040420057. The reversal of 4040420042 is 2400240404.

It can be written as a sum of positive squares in 2 ways, for example, as 4010815561 + 29604481 = 63331^2 + 5441^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 4040419996 and 4040420023.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11349317 + ... + 11349672.

Almost surely, 2^4040420042 is an apocalyptic number.

4040420042 is a deficient number, since it is larger than the sum of its proper divisors (2088307258).

4040420042 is a wasteful number, since it uses less digits than its factorization.

4040420042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22699080.

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 4040420042 is about 63564.2984858639. The cubic root of 4040420042 is about 1592.7300436668.

Adding to 4040420042 its reverse (2400240404), we get a palindrome (6440660446).

The spelling of 4040420042 in words is "four billion, forty million, four hundred twenty thousand, forty-two".