1302430140 has 72 divisors (see below), whose sum is σ = 4309866288. Its totient is φ = 315740160.

The previous prime is 1302430127. The next prime is 1302430141. The reversal of 1302430140 is 410342031.

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 (1302430141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 326917 + ... + 330876.

It is an arithmetic number, because the mean of its divisors is an integer number (59859254).

Almost surely, 2^1302430140 is an apocalyptic number.

1302430140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1302430140 is an abundant number, since it is smaller than the sum of its proper divisors (3007436148).

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

1302430140 is a wasteful number, since it uses less digits than its factorization.

1302430140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657819 (or 657814 counting only the distinct ones).

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

The square root of 1302430140 is about 36089.1969985479. The cubic root of 1302430140 is about 1092.0725206436.

Adding to 1302430140 its reverse (410342031), we get a palindrome (1712772171).

The spelling of 1302430140 in words is "one billion, three hundred two million, four hundred thirty thousand, one hundred forty".