1029065140 has 12 divisors (see below), whose sum is σ = 2161036836. Its totient is φ = 411626048.

The previous prime is 1029065077. The next prime is 1029065153. The reversal of 1029065140 is 415609201.

It can be written as a sum of positive squares in 2 ways, for example, as 356907664 + 672157476 = 18892^2 + 25926^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1029065099 and 1029065108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25726609 + ... + 25726648.

It is an arithmetic number, because the mean of its divisors is an integer number (180086403).

Almost surely, 2^1029065140 is an apocalyptic number.

1029065140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1029065140 is an abundant number, since it is smaller than the sum of its proper divisors (1131971696).

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

1029065140 is a wasteful number, since it uses less digits than its factorization.

1029065140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51453266 (or 51453264 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 1029065140 is about 32079.0451852919. The cubic root of 1029065140 is about 1009.5960021981.

The spelling of 1029065140 in words is "one billion, twenty-nine million, sixty-five thousand, one hundred forty".