402404440220422 has 8 divisors (see below), whose sum is σ = 603606860172576. Its totient is φ = 201202153496232.

The previous prime is 402404440220381. The next prime is 402404440220429. The reversal of 402404440220422 is 224022044404204.

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

It is a super-2 number, since 2×402404440220422² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402404440220429) 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, 25378473 + ... + 38064100.

It is an arithmetic number, because the mean of its divisors is an integer number (75450857521572).

Almost surely, 2^{402404440220422} is an apocalyptic number.

402404440220422 is a deficient number, since it is larger than the sum of its proper divisors (201202419952154).

402404440220422 is a wasteful number, since it uses less digits than its factorization.

402404440220422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66613982.

The product of its (nonzero) digits is 131072, while the sum is 34.

Adding to 402404440220422 its reverse (224022044404204), we get a palindrome (626426484624626).

The spelling of 402404440220422 in words is "four hundred two trillion, four hundred four billion, four hundred forty million, two hundred twenty thousand, four hundred twenty-two".