1320213042 has 12 divisors (see below), whose sum is σ = 2860461630. Its totient is φ = 440071008.

The previous prime is 1320213031. The next prime is 1320213053. The reversal of 1320213042 is 2403120231.

It is an interprime number because it is at equal distance from previous prime (1320213031) and next prime (1320213053).

It can be written as a sum of positive squares in only one way, i.e., 1319215041 + 998001 = 36321^2 + 999^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 73345169 = 1320213042 / (1 + 3 + 2 + 0 + 2 + 1 + 3 + 0 + 4 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36672567 + ... + 36672602.

Almost surely, 2^1320213042 is an apocalyptic number.

1320213042 is an abundant number, since it is smaller than the sum of its proper divisors (1540248588).

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

1320213042 is a wasteful number, since it uses less digits than its factorization.

1320213042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73345177 (or 73345174 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1320213042 is about 36334.7360249115. The cubic root of 1320213042 is about 1097.0203221683.

Adding to 1320213042 its reverse (2403120231), we get a palindrome (3723333273).

It can be divided in two parts, 13202 and 13042, that added together give a square (26244 = 162²).

The spelling of 1320213042 in words is "one billion, three hundred twenty million, two hundred thirteen thousand, forty-two".