102421052 has 12 divisors (see below), whose sum is σ = 179952696. Its totient is φ = 51006000.

The previous prime is 102421049. The next prime is 102421057. The reversal of 102421052 is 250124201.

It is a hoax number, since the sum of its digits (17) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 102421052.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102421057) 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, 50003 + ... + 52010.

It is an arithmetic number, because the mean of its divisors is an integer number (14996058).

Almost surely, 2^102421052 is an apocalyptic number.

It is an amenable number.

102421052 is a deficient number, since it is larger than the sum of its proper divisors (77531644).

102421052 is a wasteful number, since it uses less digits than its factorization.

102421052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102268 (or 102266 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 102421052 is about 10120.3286507900. The cubic root of 102421052 is about 467.8748965534.

Adding to 102421052 its reverse (250124201), we get a palindrome (352545253).

The spelling of 102421052 in words is "one hundred two million, four hundred twenty-one thousand, fifty-two".