42040161834250 has 64 divisors (see below), whose sum is σ = 79515228592800. Its totient is φ = 16641716582400.

The previous prime is 42040161834239. The next prime is 42040161834259. The reversal of 42040161834250 is 5243816104024.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 44668399801 + 41995493434449 = 211349^2 + 6480393^2 .

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 31 ways as a sum of consecutive naturals, for example, 515732496 + ... + 515814004.

Almost surely, 2^{42040161834250} is an apocalyptic number.

42040161834250 is a deficient number, since it is larger than the sum of its proper divisors (37475066758550).

42040161834250 is a wasteful number, since it uses less digits than its factorization.

42040161834250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102892 (or 102882 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 40.

Adding to 42040161834250 its reverse (5243816104024), we get a palindrome (47283977938274).

The spelling of 42040161834250 in words is "forty-two trillion, forty billion, one hundred sixty-one million, eight hundred thirty-four thousand, two hundred fifty".