1242329966 has 4 divisors (see below), whose sum is σ = 1863494952. Its totient is φ = 621164982.

The previous prime is 1242329941. The next prime is 1242329969. The reversal of 1242329966 is 6699232421.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1242329966² = 3086767488843122312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242329969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310582490 + ... + 310582493.

It is an arithmetic number, because the mean of its divisors is an integer number (465873738).

Almost surely, 2^1242329966 is an apocalyptic number.

1242329966 is a deficient number, since it is larger than the sum of its proper divisors (621164986).

1242329966 is an equidigital number, since it uses as much as digits as its factorization.

1242329966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621164985.

The product of its digits is 279936, while the sum is 44.

The square root of 1242329966 is about 35246.7014910615. The cubic root of 1242329966 is about 1075.0095448224.

The spelling of 1242329966 in words is "one billion, two hundred forty-two million, three hundred twenty-nine thousand, nine hundred sixty-six".