42006051 has 24 divisors (see below), whose sum is σ = 62624016. Its totient is φ = 27119040.

The previous prime is 42006049. The next prime is 42006089. The reversal of 42006051 is 15060024.

It is a happy number.

It is not a de Polignac number, because 42006051 - 2¹ = 42006049 is a prime.

It is a super-2 number, since 2×42006051² = 3529016641229202, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42006551) 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 23 ways as a sum of consecutive naturals, for example, 39061 + ... + 40121.

It is an arithmetic number, because the mean of its divisors is an integer number (2609334).

Almost surely, 2^42006051 is an apocalyptic number.

42006051 is a deficient number, since it is larger than the sum of its proper divisors (20617965).

42006051 is a wasteful number, since it uses less digits than its factorization.

42006051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203 (or 1200 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 42006051 is about 6481.2075263796. The cubic root of 42006051 is about 347.6193568912.

Adding to 42006051 its reverse (15060024), we get a palindrome (57066075).

The spelling of 42006051 in words is "forty-two million, six thousand, fifty-one".