1320002125 has 16 divisors (see below), whose sum is σ = 1774085040. Its totient is φ = 974769600.

The previous prime is 1320002083. The next prime is 1320002141. The reversal of 1320002125 is 5212000231.

It can be written as a sum of positive squares in 8 ways, for example, as 857494089 + 462508036 = 29283^2 + 21506^2 .

It is not a de Polignac number, because 1320002125 - 2²³ = 1311613517 is a prime.

It is a super-2 number, since 2×1320002125² = 3484811220009031250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1320002099 and 1320002108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 404530 + ... + 407779.

It is an arithmetic number, because the mean of its divisors is an integer number (110880315).

Almost surely, 2^1320002125 is an apocalyptic number.

It is an amenable number.

1320002125 is a deficient number, since it is larger than the sum of its proper divisors (454082915).

1320002125 is an equidigital number, since it uses as much as digits as its factorization.

1320002125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812337 (or 812327 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1320002125 is about 36331.8334935081. The cubic root of 1320002125 is about 1096.9618991334.

Adding to 1320002125 its reverse (5212000231), we get a palindrome (6532002356).

The spelling of 1320002125 in words is "one billion, three hundred twenty million, two thousand, one hundred twenty-five".