1020432140 has 288 divisors, whose sum is σ = 2921909760. Its totient is φ = 291852288.

The previous prime is 1020432137. The next prime is 1020432151. The reversal of 1020432140 is 412340201.

1020432140 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 (17).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 17295431 + ... + 17295489.

It is an arithmetic number, because the mean of its divisors is an integer number (10145520).

Almost surely, 2^1020432140 is an apocalyptic number.

1020432140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1020432140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1460954880).

1020432140 is an abundant number, since it is smaller than the sum of its proper divisors (1901477620).

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

1020432140 is a wasteful number, since it uses less digits than its factorization.

1020432140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1020432140 is about 31944.2035430530. The cubic root of 1020432140 is about 1006.7648469850.

Adding to 1020432140 its reverse (412340201), we get a palindrome (1432772341).

The spelling of 1020432140 in words is "one billion, twenty million, four hundred thirty-two thousand, one hundred forty".