1302402140 has 48 divisors (see below), whose sum is σ = 3073508928. Its totient is φ = 459976704.

The previous prime is 1302402121. The next prime is 1302402161. The reversal of 1302402140 is 412042031.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102917 + ... + 114876.

It is an arithmetic number, because the mean of its divisors is an integer number (64031436).

Almost surely, 2^1302402140 is an apocalyptic number.

1302402140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1302402140 is an abundant number, since it is smaller than the sum of its proper divisors (1771106788).

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

1302402140 is a wasteful number, since it uses less digits than its factorization.

1302402140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217838 (or 217836 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1302402140 is about 36088.8090687404. The cubic root of 1302402140 is about 1092.0646946961.

Adding to 1302402140 its reverse (412042031), we get a palindrome (1714444171).

The spelling of 1302402140 in words is "one billion, three hundred two million, four hundred two thousand, one hundred forty".