1006721140 has 12 divisors (see below), whose sum is σ = 2114114436. Its totient is φ = 402688448.

The previous prime is 1006721047. The next prime is 1006721207. The reversal of 1006721140 is 411276001.

It can be written as a sum of positive squares in 2 ways, for example, as 107081104 + 899640036 = 10348^2 + 29994^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25168009 + ... + 25168048.

It is an arithmetic number, because the mean of its divisors is an integer number (176176203).

Almost surely, 2^1006721140 is an apocalyptic number.

1006721140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1006721140 is an abundant number, since it is smaller than the sum of its proper divisors (1107393296).

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

1006721140 is a wasteful number, since it uses less digits than its factorization.

1006721140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50336066 (or 50336064 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 1006721140 is about 31728.8691888003. The cubic root of 1006721140 is about 1002.2353793558.

Adding to 1006721140 its reverse (411276001), we get a palindrome (1417997141).

The spelling of 1006721140 in words is "one billion, six million, seven hundred twenty-one thousand, one hundred forty".