40240220402 has 8 divisors (see below), whose sum is σ = 60439650012. Its totient is φ = 20093670400.

The previous prime is 40240220399. The next prime is 40240220407. The reversal of 40240220402 is 20402204204.

It can be written as a sum of positive squares in 2 ways, for example, as 31626709921 + 8613510481 = 177839^2 + 92809^2 .

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 (40240220407) 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, 13217999 + ... + 13221042.

Almost surely, 2^40240220402 is an apocalyptic number.

40240220402 is a deficient number, since it is larger than the sum of its proper divisors (20199429610).

40240220402 is a wasteful number, since it uses less digits than its factorization.

40240220402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26439804.

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

Adding to 40240220402 its reverse (20402204204), we get a palindrome (60642424606).

The spelling of 40240220402 in words is "forty billion, two hundred forty million, two hundred twenty thousand, four hundred two".