1229140746 has 48 divisors (see below), whose sum is σ = 2826083520. Its totient is φ = 385249920.

The previous prime is 1229140741. The next prime is 1229140747. The reversal of 1229140746 is 6470419221.

It is a happy number.

1229140746 is a `hidden beast` number, since 122 + 91 + 407 + 46 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1229140746.

It is not an unprimeable number, because it can be changed into a prime (1229140741) 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, 735 + ... + 49586.

It is an arithmetic number, because the mean of its divisors is an integer number (58876740).

Almost surely, 2^1229140746 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1229140746, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1413041760).

1229140746 is an abundant number, since it is smaller than the sum of its proper divisors (1596942774).

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

1229140746 is a wasteful number, since it uses less digits than its factorization.

1229140746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50411 (or 50408 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 1229140746 is about 35059.1036109025. The cubic root of 1229140746 is about 1071.1917155823.

Adding to 1229140746 its reverse (6470419221), we get a palindrome (7699559967).

The spelling of 1229140746 in words is "one billion, two hundred twenty-nine million, one hundred forty thousand, seven hundred forty-six".