42144515 has 32 divisors (see below), whose sum is σ = 60673536. Its totient is φ = 27498240.

The previous prime is 42144503. The next prime is 42144521. The reversal of 42144515 is 51544124.

It is not a de Polignac number, because 42144515 - 2¹² = 42140419 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61364 + ... + 62046.

It is an arithmetic number, because the mean of its divisors is an integer number (1896048).

Almost surely, 2^42144515 is an apocalyptic number.

42144515 is a deficient number, since it is larger than the sum of its proper divisors (18529021).

42144515 is a wasteful number, since it uses less digits than its factorization.

42144515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779.

The product of its digits is 3200, while the sum is 26.

The square root of 42144515 is about 6491.8806982261. The cubic root of 42144515 is about 348.0008890408. Note that the first 3 decimals are identical.

Adding to 42144515 its reverse (51544124), we get a palindrome (93688639).

The spelling of 42144515 in words is "forty-two million, one hundred forty-four thousand, five hundred fifteen".