42450424166 has 4 divisors (see below), whose sum is σ = 63675636252. Its totient is φ = 21225212082.

The previous prime is 42450424153. The next prime is 42450424189. The reversal of 42450424166 is 66142405424.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10612606040 + ... + 10612606043.

It is an arithmetic number, because the mean of its divisors is an integer number (15918909063).

Almost surely, 2^42450424166 is an apocalyptic number.

42450424166 is a deficient number, since it is larger than the sum of its proper divisors (21225212086).

42450424166 is a wasteful number, since it uses less digits than its factorization.

42450424166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21225212085.

The product of its (nonzero) digits is 184320, while the sum is 38.

The spelling of 42450424166 in words is "forty-two billion, four hundred fifty million, four hundred twenty-four thousand, one hundred sixty-six".