1320441402 has 32 divisors (see below), whose sum is σ = 3023298432. Its totient is φ = 376625664.

The previous prime is 1320441361. The next prime is 1320441403. The reversal of 1320441402 is 2041440231.

It is a super-2 number, since 2×1320441402² = 3487130992231451208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1320441403) 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, 1603 + ... + 51414.

It is an arithmetic number, because the mean of its divisors is an integer number (94478076).

Almost surely, 2^1320441402 is an apocalyptic number.

1320441402 is an abundant number, since it is smaller than the sum of its proper divisors (1702857030).

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

1320441402 is a wasteful number, since it uses less digits than its factorization.

1320441402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53622.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1320441402 is about 36337.8783365237. The cubic root of 1320441402 is about 1097.0835698186.

Adding to 1320441402 its reverse (2041440231), we get a palindrome (3361881633).

The spelling of 1320441402 in words is "one billion, three hundred twenty million, four hundred forty-one thousand, four hundred two".