1223140152 has 64 divisors (see below), whose sum is σ = 3303125280. Its totient is φ = 375201792.

The previous prime is 1223140147. The next prime is 1223140153. The reversal of 1223140152 is 2510413221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223140153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99328 + ... + 110960.

Almost surely, 2^1223140152 is an apocalyptic number.

1223140152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1223140152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1651562640).

1223140152 is an abundant number, since it is smaller than the sum of its proper divisors (2079985128).

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

1223140152 is a wasteful number, since it uses less digits than its factorization.

1223140152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11992 (or 11988 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1223140152 is about 34973.4206505455. The cubic root of 1223140152 is about 1069.4457058618.

Adding to 1223140152 its reverse (2510413221), we get a palindrome (3733553373).

The spelling of 1223140152 in words is "one billion, two hundred twenty-three million, one hundred forty thousand, one hundred fifty-two".