1223142992 has 10 divisors (see below), whose sum is σ = 2369839578. Its totient is φ = 611571488.

The previous prime is 1223142971. The next prime is 1223143007. The reversal of 1223142992 is 2992413221.

It can be written as a sum of positive squares in only one way, i.e., 1194670096 + 28472896 = 34564^2 + 5336^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38223203 + ... + 38223234.

Almost surely, 2^1223142992 is an apocalyptic number.

It is an amenable number.

1223142992 is a deficient number, since it is larger than the sum of its proper divisors (1146696586).

1223142992 is an equidigital number, since it uses as much as digits as its factorization.

1223142992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76446445 (or 76446439 counting only the distinct ones).

The product of its digits is 15552, while the sum is 35.

The square root of 1223142992 is about 34973.4612527842. The cubic root of 1223142992 is about 1069.4465335738.

The spelling of 1223142992 in words is "one billion, two hundred twenty-three million, one hundred forty-two thousand, nine hundred ninety-two".