1320243122042 has 16 divisors (see below), whose sum is σ = 2206241823240. Its totient is φ = 588331152192.

The previous prime is 1320243121999. The next prime is 1320243122053. The reversal of 1320243122042 is 2402213420231.

It can be written as a sum of positive squares in 4 ways, for example, as 435004883401 + 885238238641 = 659549^2 + 940871^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 875492033 + ... + 875493540.

Almost surely, 2^{1320243122042} is an apocalyptic number.

1320243122042 is a deficient number, since it is larger than the sum of its proper divisors (885998701198).

1320243122042 is a wasteful number, since it uses less digits than its factorization.

1320243122042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1750985617.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 1320243122042 its reverse (2402213420231), we get a palindrome (3722456542273).

The spelling of 1320243122042 in words is "one trillion, three hundred twenty billion, two hundred forty-three million, one hundred twenty-two thousand, forty-two".