1000132020 has 36 divisors (see below), whose sum is σ = 3033734340. Its totient is φ = 266701824.

The previous prime is 1000131991. The next prime is 1000132039. The reversal of 1000132020 is 202310001.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 642014244 + 358117776 = 25338^2 + 18924^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1000131993 and 1000132011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2777965 + ... + 2778324.

Almost surely, 2^1000132020 is an apocalyptic number.

1000132020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000132020 is an abundant number, since it is smaller than the sum of its proper divisors (2033602320).

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

1000132020 is a wasteful number, since it uses less digits than its factorization.

1000132020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5556304 (or 5556299 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 1000132020 is about 31624.8639522765. The cubic root of 1000132020 is about 1000.0440047302.

Adding to 1000132020 its reverse (202310001), we get a palindrome (1202442021).

The spelling of 1000132020 in words is "one billion, one hundred thirty-two thousand, twenty".