1230140530 has 16 divisors (see below), whose sum is σ = 2228359320. Its totient is φ = 488921472.

The previous prime is 1230140491. The next prime is 1230140539. The reversal of 1230140530 is 350410321.

It can be written as a sum of positive squares in 4 ways, for example, as 1113089769 + 117050761 = 33363^2 + 10819^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1230140498 and 1230140507.

It is not an unprimeable number, because it can be changed into a prime (1230140539) 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, 390195 + ... + 393334.

Almost surely, 2^1230140530 is an apocalyptic number.

1230140530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1230140530 is a deficient number, since it is larger than the sum of its proper divisors (998218790).

1230140530 is a wasteful number, since it uses less digits than its factorization.

1230140530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783693.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 1230140530 is about 35073.3592631216. The cubic root of 1230140530 is about 1071.4820729178.

Adding to 1230140530 its reverse (350410321), we get a palindrome (1580550851).

The spelling of 1230140530 in words is "one billion, two hundred thirty million, one hundred forty thousand, five hundred thirty".