252420874 has 8 divisors (see below), whose sum is σ = 385775460. Its totient is φ = 123829056.
The previous prime is 252420851. The next prime is 252420877. The reversal of 252420874 is 478024252.
It can be written as a sum of positive squares in 2 ways, for example, as 242020249 + 10400625 = 15557^2 + 3225^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is not an unprimeable number, because it can be changed into a prime (252420877) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1190559 + ... + 1190770.
Almost surely, 2252420874 is an apocalyptic number.
252420874 is a deficient number, since it is larger than the sum of its proper divisors (133354586).
252420874 is a wasteful number, since it uses less digits than its factorization.
252420874 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2381384.
The product of its (nonzero) digits is 35840, while the sum is 34.
The square root of 252420874 is about 15887.7586210264. The cubic root of 252420874 is about 631.9874032767.
The spelling of 252420874 in words is "two hundred fifty-two million, four hundred twenty thousand, eight hundred seventy-four".
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