1242124042 has 8 divisors (see below), whose sum is σ = 1865816100. Its totient is φ = 620185344.
The previous prime is 1242124021. The next prime is 1242124067. The reversal of 1242124042 is 2404212421.
It can be written as a sum of positive squares in 2 ways, for example, as 1068701481 + 173422561 = 32691^2 + 13169^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 436567 + ... + 439402.
Almost surely, 21242124042 is an apocalyptic number.
1242124042 is a deficient number, since it is larger than the sum of its proper divisors (623692058).
1242124042 is an equidigital number, since it uses as much as digits as its factorization.
1242124042 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 876680.
The product of its (nonzero) digits is 1024, while the sum is 22.
The square root of 1242124042 is about 35243.7801888503. The cubic root of 1242124042 is about 1074.9501450108.
Adding to 1242124042 its reverse (2404212421), we get a palindrome (3646336463).
It can be divided in two parts, 12421 and 24042, that added together give a palindrome (36463).
The spelling of 1242124042 in words is "one billion, two hundred forty-two million, one hundred twenty-four thousand, forty-two".
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