40042040002 has 8 divisors (see below), whose sum is σ = 61528012812. Its totient is φ = 19532702400.

The previous prime is 40042039997. The next prime is 40042040009. The reversal of 40042040002 is 20004024004.

It can be written as a sum of positive squares in 2 ways, for example, as 34292002761 + 5750037241 = 185181^2 + 75829^2 .

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

It is not an unprimeable number, because it can be changed into a prime (40042040009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244158699 + ... + 244158862.

Almost surely, 2^40042040002 is an apocalyptic number.

40042040002 is a deficient number, since it is larger than the sum of its proper divisors (21485972810).

40042040002 is a wasteful number, since it uses less digits than its factorization.

40042040002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488317604.

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 40042040002 its reverse (20004024004), we get a palindrome (60046064006).

The spelling of 40042040002 in words is "forty billion, forty-two million, forty thousand, two", and thus it is an eban number.