1005615442 has 16 divisors (see below), whose sum is σ = 1646711640. Its totient is φ = 457771392.

The previous prime is 1005615421. The next prime is 1005615449. The reversal of 1005615442 is 2445165001.

It can be written as a sum of positive squares in 4 ways, for example, as 520250481 + 485364961 = 22809^2 + 22031^2 .

It is a super-2 number, since 2×1005615442² = 2022524834377710728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1005615442.

It is not an unprimeable number, because it can be changed into a prime (1005615449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263017 + ... + 266812.

Almost surely, 2^1005615442 is an apocalyptic number.

1005615442 is a deficient number, since it is larger than the sum of its proper divisors (641096198).

1005615442 is a wasteful number, since it uses less digits than its factorization.

1005615442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529917.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 1005615442 is about 31711.4402385007. The cubic root of 1005615442 is about 1001.8683212020.

The spelling of 1005615442 in words is "one billion, five million, six hundred fifteen thousand, four hundred forty-two".