42145051 has 8 divisors (see below), whose sum is σ = 45657920. Its totient is φ = 38901096.

The previous prime is 42145009. The next prime is 42145063. The reversal of 42145051 is 15054124.

It is not a de Polignac number, because 42145051 - 2⁹ = 42144539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42145001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7395 + ... + 11788.

It is an arithmetic number, because the mean of its divisors is an integer number (5707240).

Almost surely, 2^42145051 is an apocalyptic number.

42145051 is a deficient number, since it is larger than the sum of its proper divisors (3512869).

42145051 is an equidigital number, since it uses as much as digits as its factorization.

42145051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19222 (or 19196 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 42145051 is about 6491.9219804308. The cubic root of 42145051 is about 348.0023643429.

Adding to 42145051 its reverse (15054124), we get a palindrome (57199175).

The spelling of 42145051 in words is "forty-two million, one hundred forty-five thousand, fifty-one".