252421102 has 8 divisors (see below), whose sum is σ = 378838800. Its totient is φ = 126141504.

The previous prime is 252421097. The next prime is 252421121. The reversal of 252421102 is 201124252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 252421102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29827 + ... + 37342.

It is an arithmetic number, because the mean of its divisors is an integer number (47354850).

Almost surely, 2^252421102 is an apocalyptic number.

252421102 is a deficient number, since it is larger than the sum of its proper divisors (126417698).

252421102 is a wasteful number, since it uses less digits than its factorization.

252421102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69050.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 252421102 is about 15887.7657963604. The cubic root of 252421102 is about 631.9875935582.

Adding to 252421102 its reverse (201124252), we get a palindrome (453545354).

The spelling of 252421102 in words is "two hundred fifty-two million, four hundred twenty-one thousand, one hundred two".