42211513 has 4 divisors (see below), whose sum is σ = 42231780. Its totient is φ = 42191248.

The previous prime is 42211439. The next prime is 42211523. The reversal of 42211513 is 31511224.

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 12759184 + 29452329 = 3572^2 + 5427^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42211513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42211523) 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, 6598 + ... + 11311.

It is an arithmetic number, because the mean of its divisors is an integer number (10557945).

Almost surely, 2^42211513 is an apocalyptic number.

It is an amenable number.

42211513 is a deficient number, since it is larger than the sum of its proper divisors (20267).

42211513 is a wasteful number, since it uses less digits than its factorization.

42211513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20266.

The product of its digits is 240, while the sum is 19.

The square root of 42211513 is about 6497.0387870167. The cubic root of 42211513 is about 348.1851994585.

Adding to 42211513 its reverse (31511224), we get a palindrome (73722737).

It can be divided in two parts, 42211 and 513, that added together give a palindrome (42724).

The spelling of 42211513 in words is "forty-two million, two hundred eleven thousand, five hundred thirteen".