42515151 has 8 divisors (see below), whose sum is σ = 64785024. Its totient is φ = 24294360.

The previous prime is 42515117. The next prime is 42515159. The reversal of 42515151 is 15151524.

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

It is not a de Polignac number, because 42515151 - 2¹¹ = 42513103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42515159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1012245 + ... + 1012286.

It is an arithmetic number, because the mean of its divisors is an integer number (8098128).

Almost surely, 2^42515151 is an apocalyptic number.

42515151 is a deficient number, since it is larger than the sum of its proper divisors (22269873).

42515151 is a wasteful number, since it uses less digits than its factorization.

42515151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2024541.

The product of its digits is 1000, while the sum is 24.

The square root of 42515151 is about 6520.3643303116. The cubic root of 42515151 is about 349.0180667872.

Adding to 42515151 its reverse (15151524), we get a palindrome (57666675).

It can be divided in two parts, 425 and 15151, that added together give a triangular number (15576 = T₁₇₆).

The spelling of 42515151 in words is "forty-two million, five hundred fifteen thousand, one hundred fifty-one".