1065429840 has 160 divisors (see below), whose sum is σ = 3490490880. Its totient is φ = 268398592.

The previous prime is 1065429839. The next prime is 1065429853. The reversal of 1065429840 is 489245601.

It is a super-2 number, since 2×1065429840² = 2270281487924851200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 325492 + ... + 328748.

It is an arithmetic number, because the mean of its divisors is an integer number (21815568).

Almost surely, 2^1065429840 is an apocalyptic number.

1065429840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1065429840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1745245440).

1065429840 is an abundant number, since it is smaller than the sum of its proper divisors (2425061040).

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

1065429840 is a wasteful number, since it uses less digits than its factorization.

1065429840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3349 (or 3343 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 1065429840 is about 32640.9227810735. The cubic root of 1065429840 is about 1021.3508438137.

The spelling of 1065429840 in words is "one billion, sixty-five million, four hundred twenty-nine thousand, eight hundred forty".