1229330140 has 12 divisors (see below), whose sum is σ = 2581593336. Its totient is φ = 491732048.

The previous prime is 1229330131. The next prime is 1229330149. The reversal of 1229330140 is 410339221.

It is an interprime number because it is at equal distance from previous prime (1229330131) and next prime (1229330149).

It is a super-2 number, since 2×1229330140² = 3022505186224839200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229330149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30733234 + ... + 30733273.

It is an arithmetic number, because the mean of its divisors is an integer number (215132778).

Almost surely, 2^1229330140 is an apocalyptic number.

1229330140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1229330140 is an abundant number, since it is smaller than the sum of its proper divisors (1352263196).

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

1229330140 is a wasteful number, since it uses less digits than its factorization.

1229330140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61466516 (or 61466514 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1229330140 is about 35061.8045742087. The cubic root of 1229330140 is about 1071.2467314853.

Adding to 1229330140 its reverse (410339221), we get a palindrome (1639669361).

The spelling of 1229330140 in words is "one billion, two hundred twenty-nine million, three hundred thirty thousand, one hundred forty".