40400234340402 has 32 divisors (see below), whose sum is σ = 81601355767680. Its totient is φ = 13333266483200.

The previous prime is 40400234340383. The next prime is 40400234340407. The reversal of 40400234340402 is 20404343200404.

40400234340402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 40400234340402.

It is not an unprimeable number, because it can be changed into a prime (40400234340407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65704963 + ... + 66316985.

It is an arithmetic number, because the mean of its divisors is an integer number (2550042367740).

Almost surely, 2^{40400234340402} is an apocalyptic number.

40400234340402 is an abundant number, since it is smaller than the sum of its proper divisors (41201121427278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40400234340402 is a wasteful number, since it uses less digits than its factorization.

40400234340402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721058.

The product of its (nonzero) digits is 36864, while the sum is 30.

Adding to 40400234340402 its reverse (20404343200404), we get a palindrome (60804577540806).

The spelling of 40400234340402 in words is "forty trillion, four hundred billion, two hundred thirty-four million, three hundred forty thousand, four hundred two".