1320100429 has 4 divisors (see below), whose sum is σ = 1321693660. Its totient is φ = 1318507200.

The previous prime is 1320100403. The next prime is 1320100447. The reversal of 1320100429 is 9240010231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1019077929 + 301022500 = 31923^2 + 17350^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320100429 - 2¹³ = 1320092237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320100469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 795372 + ... + 797029.

It is an arithmetic number, because the mean of its divisors is an integer number (330423415).

Almost surely, 2^1320100429 is an apocalyptic number.

It is an amenable number.

1320100429 is a deficient number, since it is larger than the sum of its proper divisors (1593231).

1320100429 is an equidigital number, since it uses as much as digits as its factorization.

1320100429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1593230.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1320100429 is about 36333.1863315069. The cubic root of 1320100429 is about 1096.9891296617.

The spelling of 1320100429 in words is "one billion, three hundred twenty million, one hundred thousand, four hundred twenty-nine".