40002012420402 has 128 divisors (see below), whose sum is σ = 88301493181440. Its totient is φ = 12033896232960.

The previous prime is 40002012420401. The next prime is 40002012420413. The reversal of 40002012420402 is 20402421020004.

It is not an unprimeable number, because it can be changed into a prime (40002012420401) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 712855098 + ... + 712911210.

It is an arithmetic number, because the mean of its divisors is an integer number (689855415480).

Almost surely, 2^{40002012420402} is an apocalyptic number.

40002012420402 is an abundant number, since it is smaller than the sum of its proper divisors (48299480761038).

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

40002012420402 is a wasteful number, since it uses less digits than its factorization.

40002012420402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59768.

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 40002012420402 its reverse (20402421020004), we get a palindrome (60404433440406).

The spelling of 40002012420402 in words is "forty trillion, two billion, twelve million, four hundred twenty thousand, four hundred two".