1005630642 has 24 divisors (see below), whose sum is σ = 2189201040. Its totient is φ = 333620280.

The previous prime is 1005630623. The next prime is 1005630649. The reversal of 1005630642 is 2460365001.

1005630642 is a `hidden beast` number, since 10 + 0 + 5 + 6 + 3 + 0 + 642 = 666.

It is a super-2 number, since 2×1005630642² = 2022585976258664328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1005630649) 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 11 ways as a sum of consecutive naturals, for example, 128592 + ... + 136187.

It is an arithmetic number, because the mean of its divisors is an integer number (91216710).

Almost surely, 2^1005630642 is an apocalyptic number.

1005630642 is an abundant number, since it is smaller than the sum of its proper divisors (1183570398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1005630642 is a wasteful number, since it uses less digits than its factorization.

1005630642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264998 (or 264995 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 1005630642 is about 31711.6798987376. The cubic root of 1005630642 is about 1001.8733689639.

Adding to 1005630642 its reverse (2460365001), we get a palindrome (3465995643).

The spelling of 1005630642 in words is "one billion, five million, six hundred thirty thousand, six hundred forty-two".