1021303140 has 96 divisors (see below), whose sum is σ = 3359615616. Its totient is φ = 228541440.

The previous prime is 1021303133. The next prime is 1021303141. The reversal of 1021303140 is 413031201.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (1021303141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50937 + ... + 68096.

It is an arithmetic number, because the mean of its divisors is an integer number (34995996).

Almost surely, 2^1021303140 is an apocalyptic number.

1021303140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021303140 is an abundant number, since it is smaller than the sum of its proper divisors (2338312476).

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

1021303140 is a wasteful number, since it uses less digits than its factorization.

1021303140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119069 (or 119067 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1021303140 is about 31957.8337814064. The cubic root of 1021303140 is about 1007.0512102398.

Adding to 1021303140 its reverse (413031201), we get a palindrome (1434334341).

The spelling of 1021303140 in words is "one billion, twenty-one million, three hundred three thousand, one hundred forty".