42001252050042 has 12 divisors (see below), whose sum is σ = 91002712775130. Its totient is φ = 14000417350008.

The previous prime is 42001252050041. The next prime is 42001252050073. The reversal of 42001252050042 is 24005025210024.

42001252050042 is a `hidden beast` number, since 42 + 0 + 0 + 12 + 520 + 50 + 0 + 42 = 666.

It can be written as a sum of positive squares in only one way, i.e., 34210672322121 + 7790579727921 = 5848989^2 + 2791161^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42001252049988 and 42001252050015.

It is not an unprimeable number, because it can be changed into a prime (42001252050041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1166701445817 + ... + 1166701445852.

Almost surely, 2^{42001252050042} is an apocalyptic number.

42001252050042 is an abundant number, since it is smaller than the sum of its proper divisors (49001460725088).

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

42001252050042 is a wasteful number, since it uses less digits than its factorization.

42001252050042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2333402891677 (or 2333402891674 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

Adding to 42001252050042 its reverse (24005025210024), we get a palindrome (66006277260066).

The spelling of 42001252050042 in words is "forty-two trillion, one billion, two hundred fifty-two million, fifty thousand, forty-two".