42512415 has 32 divisors (see below), whose sum is σ = 74967552. Its totient is φ = 20400000.

The previous prime is 42512401. The next prime is 42512417. The reversal of 42512415 is 51421524.

It is not a de Polignac number, because 42512415 - 2⁵ = 42512383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42512417) 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 31 ways as a sum of consecutive naturals, for example, 15390 + ... + 17940.

It is an arithmetic number, because the mean of its divisors is an integer number (2342736).

Almost surely, 2^42512415 is an apocalyptic number.

42512415 is a deficient number, since it is larger than the sum of its proper divisors (32455137).

42512415 is a wasteful number, since it uses less digits than its factorization.

42512415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2671.

The product of its digits is 1600, while the sum is 24.

The square root of 42512415 is about 6520.1545227088. The cubic root of 42512415 is about 349.0105797785.

Adding to 42512415 its reverse (51421524), we get a palindrome (93933939).

It can be divided in two parts, 4251 and 2415, that added together give a palindrome (6666).

The spelling of 42512415 in words is "forty-two million, five hundred twelve thousand, four hundred fifteen".