42505011 has 12 divisors (see below), whose sum is σ = 61453392. Its totient is φ = 28310256.

The previous prime is 42505003. The next prime is 42505013. The reversal of 42505011 is 11050524.

It is not a de Polignac number, because 42505011 - 2³ = 42505003 is a prime.

It is a super-2 number, since 2×42505011² = 3613351920220242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42505013) 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 11 ways as a sum of consecutive naturals, for example, 15345 + ... + 17901.

It is an arithmetic number, because the mean of its divisors is an integer number (5121116).

Almost surely, 2^42505011 is an apocalyptic number.

42505011 is a deficient number, since it is larger than the sum of its proper divisors (18948381).

42505011 is a wasteful number, since it uses less digits than its factorization.

42505011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4410 (or 4407 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 42505011 is about 6519.5867200306. The cubic root of 42505011 is about 348.9903172712.

Adding to 42505011 its reverse (11050524), we get a palindrome (53555535).

It can be divided in two parts, 4250 and 5011, that added together give a cube (9261 = 21³).

The spelling of 42505011 in words is "forty-two million, five hundred five thousand, eleven".