42211515 has 16 divisors (see below), whose sum is σ = 67629600. Its totient is φ = 22482432.

The previous prime is 42211439. The next prime is 42211523. The reversal of 42211515 is 51511224.

It is not a de Polignac number, because 42211515 - 2⁸ = 42211259 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42211491 and 42211500.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 13741 + ... + 16529.

It is an arithmetic number, because the mean of its divisors is an integer number (4226850).

Almost surely, 2^42211515 is an apocalyptic number.

42211515 is a deficient number, since it is larger than the sum of its proper divisors (25418085).

42211515 is a wasteful number, since it uses less digits than its factorization.

42211515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3806.

The product of its digits is 400, while the sum is 21.

The square root of 42211515 is about 6497.0389409330. The cubic root of 42211515 is about 348.1852049575.

Adding to 42211515 its reverse (51511224), we get a palindrome (93722739).

The spelling of 42211515 in words is "forty-two million, two hundred eleven thousand, five hundred fifteen".