1320302140 has 24 divisors (see below), whose sum is σ = 2868243840. Its totient is φ = 509909568.

The previous prime is 1320302129. The next prime is 1320302141. The reversal of 1320302140 is 412030231.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320302141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1137612 + ... + 1138771.

It is an arithmetic number, because the mean of its divisors is an integer number (119510160).

Almost surely, 2^1320302140 is an apocalyptic number.

1320302140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320302140 is an abundant number, since it is smaller than the sum of its proper divisors (1547941700).

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

1320302140 is a wasteful number, since it uses less digits than its factorization.

1320302140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2276421 (or 2276419 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1320302140 is about 36335.9620761581. The cubic root of 1320302140 is about 1097.0450000334.

Adding to 1320302140 its reverse (412030231), we get a palindrome (1732332371).

The spelling of 1320302140 in words is "one billion, three hundred twenty million, three hundred two thousand, one hundred forty".