42145042 has 8 divisors (see below), whose sum is σ = 63280332. Its totient is φ = 21051600.

The previous prime is 42145009. The next prime is 42145063. The reversal of 42145042 is 24054124.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 39425841 + 2719201 = 6279^2 + 1649^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7809 + ... + 12052.

Almost surely, 2^42145042 is an apocalyptic number.

42145042 is a deficient number, since it is larger than the sum of its proper divisors (21135290).

42145042 is a wasteful number, since it uses less digits than its factorization.

42145042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20924.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 42145042 is about 6491.9212872616. The cubic root of 42145042 is about 348.0023395712.

Adding to 42145042 its reverse (24054124), we get a palindrome (66199166).

The spelling of 42145042 in words is "forty-two million, one hundred forty-five thousand, forty-two".