505423232420442 has 32 divisors (see below), whose sum is σ = 1166049860654592. Its totient is φ = 143057043087024.

The previous prime is 505423232420401. The next prime is 505423232420471. The reversal of 505423232420442 is 244024232324505.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 505423232420394 and 505423232420403.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56233109928 + ... + 56233118915.

It is an arithmetic number, because the mean of its divisors is an integer number (36439058145456).

Almost surely, 2^{505423232420442} is an apocalyptic number.

505423232420442 is an abundant number, since it is smaller than the sum of its proper divisors (660626628234150).

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

505423232420442 is a wasteful number, since it uses less digits than its factorization.

505423232420442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112466228962.

The product of its (nonzero) digits is 1843200, while the sum is 42.

Adding to 505423232420442 its reverse (244024232324505), we get a palindrome (749447464744947).

The spelling of 505423232420442 in words is "five hundred five trillion, four hundred twenty-three billion, two hundred thirty-two million, four hundred twenty thousand, four hundred forty-two".