1020246140 has 48 divisors (see below), whose sum is σ = 2204190912. Its totient is φ = 396389376.

The previous prime is 1020246127. The next prime is 1020246191. The reversal of 1020246140 is 416420201.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 785972 + ... + 787268.

It is an arithmetic number, because the mean of its divisors is an integer number (45920644).

Almost surely, 2^1020246140 is an apocalyptic number.

1020246140 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 1020246140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1102095456).

1020246140 is an abundant number, since it is smaller than the sum of its proper divisors (1183944772).

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

1020246140 is a wasteful number, since it uses less digits than its factorization.

1020246140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2406 (or 2404 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1020246140 is about 31941.2920840720. The cubic root of 1020246140 is about 1006.7036736733.

Adding to 1020246140 its reverse (416420201), we get a palindrome (1436666341).

The spelling of 1020246140 in words is "one billion, twenty million, two hundred forty-six thousand, one hundred forty".