42511155 has 8 divisors (see below), whose sum is σ = 68017872. Its totient is φ = 22672608.

The previous prime is 42511121. The next prime is 42511163. The reversal of 42511155 is 55111524.

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

It is not a de Polignac number, because 42511155 - 2¹⁰ = 42510131 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1417024 + ... + 1417053.

It is an arithmetic number, because the mean of its divisors is an integer number (8502234).

Almost surely, 2^42511155 is an apocalyptic number.

42511155 is a deficient number, since it is larger than the sum of its proper divisors (25506717).

42511155 is a wasteful number, since it uses less digits than its factorization.

42511155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2834085.

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

The square root of 42511155 is about 6520.0578985159. The cubic root of 42511155 is about 349.0071317059.

Adding to 42511155 its reverse (55111524), we get a palindrome (97622679).

The spelling of 42511155 in words is "forty-two million, five hundred eleven thousand, one hundred fifty-five".