1005040442 has 16 divisors (see below), whose sum is σ = 1824275520. Its totient is φ = 405394368.

The previous prime is 1005040441. The next prime is 1005040481. The reversal of 1005040442 is 2440405001.

It is not an unprimeable number, because it can be changed into a prime (1005040441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2111192 + ... + 2111667.

It is an arithmetic number, because the mean of its divisors is an integer number (114017220).

Almost surely, 2^1005040442 is an apocalyptic number.

1005040442 is a deficient number, since it is larger than the sum of its proper divisors (819235078).

1005040442 is a wasteful number, since it uses less digits than its factorization.

1005040442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4222885.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 1005040442 is about 31702.3728134031. The cubic root of 1005040442 is about 1001.6773323166.

Adding to 1005040442 its reverse (2440405001), we get a palindrome (3445445443).

The spelling of 1005040442 in words is "one billion, five million, forty thousand, four hundred forty-two".