1061439240 has 32 divisors (see below), whose sum is σ = 3184318080. Its totient is φ = 283050432.

The previous prime is 1061439229. The next prime is 1061439257. The reversal of 1061439240 is 429341601.

It is a super-2 number, since 2×1061439240² = 2253306520423555200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1061439198 and 1061439207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4422544 + ... + 4422783.

It is an arithmetic number, because the mean of its divisors is an integer number (99509940).

Almost surely, 2^1061439240 is an apocalyptic number.

1061439240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1061439240 is an abundant number, since it is smaller than the sum of its proper divisors (2122878840).

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

1061439240 is a wasteful number, since it uses less digits than its factorization.

1061439240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8845341 (or 8845337 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 1061439240 is about 32579.7366471861. The cubic root of 1061439240 is about 1020.0740815091.

The spelling of 1061439240 in words is "one billion, sixty-one million, four hundred thirty-nine thousand, two hundred forty".