42162045 has 16 divisors (see below), whose sum is σ = 71010240. Its totient is φ = 21302784.

The previous prime is 42162031. The next prime is 42162047. The reversal of 42162045 is 54026124.

It is a de Polignac number, because none of the positive numbers 2^k-42162045 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42162047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73684 + ... + 74253.

It is an arithmetic number, because the mean of its divisors is an integer number (4438140).

Almost surely, 2^42162045 is an apocalyptic number.

It is an amenable number.

42162045 is a deficient number, since it is larger than the sum of its proper divisors (28848195).

42162045 is a wasteful number, since it uses less digits than its factorization.

42162045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147964.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 42162045 is about 6493.2307058967. The cubic root of 42162045 is about 348.0491326454.

Adding to 42162045 its reverse (54026124), we get a palindrome (96188169).

The spelling of 42162045 in words is "forty-two million, one hundred sixty-two thousand, forty-five".