1302040020 has 24 divisors (see below), whose sum is σ = 3645712224. Its totient is φ = 347210656.

The previous prime is 1302040009. The next prime is 1302040063. The reversal of 1302040020 is 200402031.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1302039978 and 1302040005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10850274 + ... + 10850393.

It is an arithmetic number, because the mean of its divisors is an integer number (151904676).

Almost surely, 2^1302040020 is an apocalyptic number.

1302040020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1302040020 is an abundant number, since it is smaller than the sum of its proper divisors (2343672204).

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

1302040020 is a wasteful number, since it uses less digits than its factorization.

1302040020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21700679 (or 21700677 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 1302040020 is about 36083.7916522086. The cubic root of 1302040020 is about 1091.9634727279.

Adding to 1302040020 its reverse (200402031), we get a palindrome (1502442051).

The spelling of 1302040020 in words is "one billion, three hundred two million, forty thousand, twenty".