1242122664 has 32 divisors (see below), whose sum is σ = 3212388000. Its totient is φ = 399763392.

The previous prime is 1242122653. The next prime is 1242122669. The reversal of 1242122664 is 4662212421.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1242122669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 891634 + ... + 893025.

It is an arithmetic number, because the mean of its divisors is an integer number (100387125).

Almost surely, 2^1242122664 is an apocalyptic number.

It is an amenable number.

1242122664 is an abundant number, since it is smaller than the sum of its proper divisors (1970265336).

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

1242122664 is a wasteful number, since it uses less digits than its factorization.

1242122664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784697 (or 1784693 counting only the distinct ones).

The product of its digits is 9216, while the sum is 30.

The square root of 1242122664 is about 35243.7606392961. The cubic root of 1242122664 is about 1074.9497474977.

The spelling of 1242122664 in words is "one billion, two hundred forty-two million, one hundred twenty-two thousand, six hundred sixty-four".