1052445140 has 24 divisors (see below), whose sum is σ = 2230415880. Its totient is φ = 417115008.

The previous prime is 1052445137. The next prime is 1052445187. The reversal of 1052445140 is 415442501.

It can be written as a sum of positive squares in 4 ways, for example, as 59691076 + 992754064 = 7726^2 + 31508^2 .

It is a super-2 number, since 2×1052445140² = 2215281545419239200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 239207 + ... + 243566.

It is an arithmetic number, because the mean of its divisors is an integer number (92933995).

Almost surely, 2^1052445140 is an apocalyptic number.

1052445140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1052445140 is an abundant number, since it is smaller than the sum of its proper divisors (1177970740).

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

1052445140 is a wasteful number, since it uses less digits than its factorization.

1052445140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482891 (or 482889 counting only the distinct ones).

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

The square root of 1052445140 is about 32441.4108817727. The cubic root of 1052445140 is about 1017.1847075312.

Adding to 1052445140 its reverse (415442501), we get a palindrome (1467887641).

The spelling of 1052445140 in words is "one billion, fifty-two million, four hundred forty-five thousand, one hundred forty".