42545252122 has 4 divisors (see below), whose sum is σ = 63817878186. Its totient is φ = 21272626060.

The previous prime is 42545252107. The next prime is 42545252131. The reversal of 42545252122 is 22125254524.

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., 23669514801 + 18875737321 = 153849^2 + 137389^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10636313029 + ... + 10636313032.

Almost surely, 2^42545252122 is an apocalyptic number.

42545252122 is a deficient number, since it is larger than the sum of its proper divisors (21272626064).

42545252122 is a wasteful number, since it uses less digits than its factorization.

42545252122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21272626063.

The product of its digits is 64000, while the sum is 34.

The spelling of 42545252122 in words is "forty-two billion, five hundred forty-five million, two hundred fifty-two thousand, one hundred twenty-two".