42516041 has 4 divisors (see below), whose sum is σ = 42532500. Its totient is φ = 42499584.

The previous prime is 42516037. The next prime is 42516043. The reversal of 42516041 is 14061524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17305600 + 25210441 = 4160^2 + 5021^2 .

It is a cyclic number.

It is not a de Polignac number, because 42516041 - 2² = 42516037 is a prime.

It is a super-2 number, since 2×42516041² = 3615227484627362, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42515998 and 42516016.

It is not an unprimeable number, because it can be changed into a prime (42516043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3416 + ... + 9833.

It is an arithmetic number, because the mean of its divisors is an integer number (10633125).

Almost surely, 2^42516041 is an apocalyptic number.

It is an amenable number.

42516041 is a deficient number, since it is larger than the sum of its proper divisors (16459).

42516041 is a wasteful number, since it uses less digits than its factorization.

42516041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16458.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 42516041 is about 6520.4325776746. The cubic root of 42516041 is about 349.0205021850.

Adding to 42516041 its reverse (14061524), we get a palindrome (56577565).

It can be divided in two parts, 425160 and 41, that multiplied together give a triangular number (17431560 = T₅₉₀₄).

The spelling of 42516041 in words is "forty-two million, five hundred sixteen thousand, forty-one".