1321410020 has 48 divisors (see below), whose sum is σ = 3225156480. Its totient is φ = 445373184.

The previous prime is 1321410019. The next prime is 1321410023. The reversal of 1321410020 is 200141231.

It is a super-2 number, since 2×1321410020² = 3492248881912800800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1321409977 and 1321410004.

It is not an unprimeable number, because it can be changed into a prime (1321410023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71729 + ... + 88248.

It is an arithmetic number, because the mean of its divisors is an integer number (67190760).

Almost surely, 2^1321410020 is an apocalyptic number.

1321410020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321410020 is an abundant number, since it is smaller than the sum of its proper divisors (1903746460).

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

1321410020 is a wasteful number, since it uses less digits than its factorization.

1321410020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160052 (or 160050 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1321410020 is about 36351.2038315102. The cubic root of 1321410020 is about 1097.3517617425.

Adding to 1321410020 its reverse (200141231), we get a palindrome (1521551251).

The spelling of 1321410020 in words is "one billion, three hundred twenty-one million, four hundred ten thousand, twenty".