1020321140 has 24 divisors (see below), whose sum is σ = 2143314432. Its totient is φ = 408006560.

The previous prime is 1020321053. The next prime is 1020321149. The reversal of 1020321140 is 411230201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020321149) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 94205 + ... + 104475.

It is an arithmetic number, because the mean of its divisors is an integer number (89304768).

Almost surely, 2^1020321140 is an apocalyptic number.

1020321140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020321140 is an abundant number, since it is smaller than the sum of its proper divisors (1122993292).

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

1020321140 is a wasteful number, since it uses less digits than its factorization.

1020321140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15247 (or 15245 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1020321140 is about 31942.4660913963. The cubic root of 1020321140 is about 1006.7283412257.

Adding to 1020321140 its reverse (411230201), we get a palindrome (1431551341).

The spelling of 1020321140 in words is "one billion, twenty million, three hundred twenty-one thousand, one hundred forty".