1320122142 has 24 divisors (see below), whose sum is σ = 2865515016. Its totient is φ = 439232976.

The previous prime is 1320122129. The next prime is 1320122143. The reversal of 1320122142 is 2412210231.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320122143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57193 + ... + 76884.

It is an arithmetic number, because the mean of its divisors is an integer number (119396459).

Almost surely, 2^1320122142 is an apocalyptic number.

1320122142 is an abundant number, since it is smaller than the sum of its proper divisors (1545392874).

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

1320122142 is a wasteful number, since it uses less digits than its factorization.

1320122142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134632 (or 134629 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1320122142 is about 36333.4851342395. The cubic root of 1320122142 is about 1096.9951440512.

Adding to 1320122142 its reverse (2412210231), we get a palindrome (3732332373).

The spelling of 1320122142 in words is "one billion, three hundred twenty million, one hundred twenty-two thousand, one hundred forty-two".