1302125020 has 36 divisors (see below), whose sum is σ = 3180907800. Its totient is φ = 446442528.

The previous prime is 1302124997. The next prime is 1302125021. The reversal of 1302125020 is 205212031.

It is a junction number, because it is equal to n+sod(n) for n = 1302124985 and 1302125003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1302125021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 663370 + ... + 665329.

It is an arithmetic number, because the mean of its divisors is an integer number (88358550).

Almost surely, 2^1302125020 is an apocalyptic number.

1302125020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1302125020 is an abundant number, since it is smaller than the sum of its proper divisors (1878782780).

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

1302125020 is a wasteful number, since it uses less digits than its factorization.

1302125020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328722 (or 1328713 counting only the distinct ones).

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

The square root of 1302125020 is about 36084.9694471258. The cubic root of 1302125020 is about 1091.9872341265.

Adding to 1302125020 its reverse (205212031), we get a palindrome (1507337051).

The spelling of 1302125020 in words is "one billion, three hundred two million, one hundred twenty-five thousand, twenty".