1020302140 has 48 divisors (see below), whose sum is σ = 2517228000. Its totient is φ = 342478080.

The previous prime is 1020302119. The next prime is 1020302159. The reversal of 1020302140 is 412030201.

1020302140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 1020302140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175515 + ... + 181234.

It is an arithmetic number, because the mean of its divisors is an integer number (52442250).

Almost surely, 2^1020302140 is an apocalyptic number.

1020302140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020302140 is an abundant number, since it is smaller than the sum of its proper divisors (1496925860).

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

1020302140 is a wasteful number, since it uses less digits than its factorization.

1020302140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356782 (or 356780 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1020302140 is about 31942.1686802884. The cubic root of 1020302140 is about 1006.7220922268.

Adding to 1020302140 its reverse (412030201), we get a palindrome (1432332341).

The spelling of 1020302140 in words is "one billion, twenty million, three hundred two thousand, one hundred forty".