402021323122242 has 32 divisors (see below), whose sum is σ = 825774938217792. Its totient is φ = 130385071410624.

The previous prime is 402021323122241. The next prime is 402021323122271. The reversal of 402021323122242 is 242221323120204.

It is a super-2 number, since 2×402021323122242² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (402021323122241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173182033 + ... + 175488059.

It is an arithmetic number, because the mean of its divisors is an integer number (25805466819306).

Almost surely, 2^{402021323122242} is an apocalyptic number.

402021323122242 is an abundant number, since it is smaller than the sum of its proper divisors (423753615095550).

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

402021323122242 is a wasteful number, since it uses less digits than its factorization.

402021323122242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3091362.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 402021323122242 its reverse (242221323120204), we get a palindrome (644242646242446).

The spelling of 402021323122242 in words is "four hundred two trillion, twenty-one billion, three hundred twenty-three million, one hundred twenty-two thousand, two hundred forty-two".