42455515 has 16 divisors (see below), whose sum is σ = 52565760. Its totient is φ = 32902240.

The previous prime is 42455503. The next prime is 42455527. The reversal of 42455515 is 51555424.

It is an interprime number because it is at equal distance from previous prime (42455503) and next prime (42455527).

It is not a de Polignac number, because 42455515 - 2⁹ = 42455003 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19932 + ... + 21958.

It is an arithmetic number, because the mean of its divisors is an integer number (3285360).

Almost surely, 2^42455515 is an apocalyptic number.

42455515 is a deficient number, since it is larger than the sum of its proper divisors (10110245).

42455515 is a wasteful number, since it uses less digits than its factorization.

42455515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2162.

The product of its digits is 20000, while the sum is 31.

The square root of 42455515 is about 6515.7896681830. The cubic root of 42455515 is about 348.8548012181.

Subtracting 42455515 from its reverse (51555424), we obtain a palindrome (9099909).

The spelling of 42455515 in words is "forty-two million, four hundred fifty-five thousand, five hundred fifteen".