42166153450 has 12 divisors (see below), whose sum is σ = 78429045510. Its totient is φ = 16866461360.

The previous prime is 42166153373. The next prime is 42166153451. The reversal of 42166153450 is 5435166124.

It can be written as a sum of positive squares in 3 ways, for example, as 40984787809 + 1181365641 = 202447^2 + 34371^2 .

It is not an unprimeable number, because it can be changed into a prime (42166153451) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 421661485 + ... + 421661584.

Almost surely, 2^42166153450 is an apocalyptic number.

42166153450 is a deficient number, since it is larger than the sum of its proper divisors (36262892060).

42166153450 is a wasteful number, since it uses less digits than its factorization.

42166153450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843323081 (or 843323076 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 42166153450 in words is "forty-two billion, one hundred sixty-six million, one hundred fifty-three thousand, four hundred fifty".