42440133243242 has 32 divisors (see below), whose sum is σ = 74571495661440. Its totient is φ = 17739758836800.

The previous prime is 42440133243197. The next prime is 42440133243257. The reversal of 42440133243242 is 24234233104424.

It is a junction number, because it is equal to n+sod(n) for n = 42440133243196 and 42440133243205.

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, 223892117 + ... + 224081592.

It is an arithmetic number, because the mean of its divisors is an integer number (2330359239420).

Almost surely, 2^{42440133243242} is an apocalyptic number.

42440133243242 is a deficient number, since it is larger than the sum of its proper divisors (32131362418198).

42440133243242 is a wasteful number, since it uses less digits than its factorization.

42440133243242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447973886.

The product of its (nonzero) digits is 442368, while the sum is 38.

Adding to 42440133243242 its reverse (24234233104424), we get a palindrome (66674366347666).

The spelling of 42440133243242 in words is "forty-two trillion, four hundred forty billion, one hundred thirty-three million, two hundred forty-three thousand, two hundred forty-two".