42040161834252 has 24 divisors (see below), whose sum is σ = 99475312511232. Its totient is φ = 13816015626000.

The previous prime is 42040161834239. The next prime is 42040161834259. The reversal of 42040161834252 is 25243816104024.

It is not an unprimeable number, because it can be changed into a prime (42040161834259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24671455624 + ... + 24671457327.

It is an arithmetic number, because the mean of its divisors is an integer number (4144804687968).

Almost surely, 2^{42040161834252} is an apocalyptic number.

It is an amenable number.

42040161834252 is an abundant number, since it is smaller than the sum of its proper divisors (57435150676980).

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

42040161834252 is a wasteful number, since it uses less digits than its factorization.

42040161834252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49342913029 (or 49342913027 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 42.

Adding to 42040161834252 its reverse (25243816104024), we get a palindrome (67283977938276).

The spelling of 42040161834252 in words is "forty-two trillion, forty billion, one hundred sixty-one million, eight hundred thirty-four thousand, two hundred fifty-two".