1242124066 has 4 divisors (see below), whose sum is σ = 1863186102. Its totient is φ = 621062032.
The previous prime is 1242124021. The next prime is 1242124067. The reversal of 1242124066 is 6604212421.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in only one way, i.e., 1227030841 + 15093225 = 35029^2 + 3885^2 .
It is not an unprimeable number, because it can be changed into a prime (1242124067) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310531015 + ... + 310531018.
Almost surely, 21242124066 is an apocalyptic number.
1242124066 is a deficient number, since it is larger than the sum of its proper divisors (621062036).
1242124066 is an equidigital number, since it uses as much as digits as its factorization.
1242124066 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 621062035.
The product of its (nonzero) digits is 4608, while the sum is 28.
The square root of 1242124066 is about 35243.7805293360. The cubic root of 1242124066 is about 1074.9501519341.
Adding to 1242124066 its reverse (6604212421), we get a palindrome (7846336487).
The spelling of 1242124066 in words is "one billion, two hundred forty-two million, one hundred twenty-four thousand, sixty-six".
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