42120142202 has 4 divisors (see below), whose sum is σ = 63180213306. Its totient is φ = 21060071100.

The previous prime is 42120142171. The next prime is 42120142243. The reversal of 42120142202 is 20224102124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 35815941001 + 6304201201 = 189251^2 + 79399^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10530035549 + ... + 10530035552.

Almost surely, 2^42120142202 is an apocalyptic number.

42120142202 is a deficient number, since it is larger than the sum of its proper divisors (21060071104).

42120142202 is a wasteful number, since it uses less digits than its factorization.

42120142202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21060071103.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 42120142202 its reverse (20224102124), we get a palindrome (62344244326).

The spelling of 42120142202 in words is "forty-two billion, one hundred twenty million, one hundred forty-two thousand, two hundred two".