1020487140 has 96 divisors (see below), whose sum is σ = 3277317120. Its totient is φ = 263347200.

The previous prime is 1020487123. The next prime is 1020487163. The reversal of 1020487140 is 417840201.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 31 ways as a sum of consecutive naturals, for example, 13741 + ... + 47220.

It is an arithmetic number, because the mean of its divisors is an integer number (34138720).

Almost surely, 2^1020487140 is an apocalyptic number.

1020487140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020487140 is an abundant number, since it is smaller than the sum of its proper divisors (2256829980).

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

1020487140 is a wasteful number, since it uses less digits than its factorization.

1020487140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61010 (or 61002 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 1020487140 is about 31945.0644075106. The cubic root of 1020487140 is about 1006.7829344435.

It can be divided in two parts, 10204 and 87140, that added together give a square (97344 = 312²).

The spelling of 1020487140 in words is "one billion, twenty million, four hundred eighty-seven thousand, one hundred forty".