1005125442 has 32 divisors (see below), whose sum is σ = 2201904000. Its totient is φ = 304459008.

The previous prime is 1005125377. The next prime is 1005125449. The reversal of 1005125442 is 2445215001.

It is a super-3 number, since 3×1005125442³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1005125449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166942 + ... + 172857.

It is an arithmetic number, because the mean of its divisors is an integer number (68809500).

Almost surely, 2^1005125442 is an apocalyptic number.

1005125442 is an abundant number, since it is smaller than the sum of its proper divisors (1196778558).

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

1005125442 is a wasteful number, since it uses less digits than its factorization.

1005125442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339850.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1005125442 is about 31703.7133787195. The cubic root of 1005125442 is about 1001.7055700437.

The spelling of 1005125442 in words is "one billion, five million, one hundred twenty-five thousand, four hundred forty-two".