102421010 has 8 divisors (see below), whose sum is σ = 184357836. Its totient is φ = 40968400.

The previous prime is 102420973. The next prime is 102421019. The reversal of 102421010 is 10124201.

It can be written as a sum of positive squares in 2 ways, for example, as 96255721 + 6165289 = 9811^2 + 2483^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 102420982 and 102421000.

It is not an unprimeable number, because it can be changed into a prime (102421019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5121041 + ... + 5121060.

Almost surely, 2^102421010 is an apocalyptic number.

102421010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102421010 is a deficient number, since it is larger than the sum of its proper divisors (81936826).

102421010 is a wasteful number, since it uses less digits than its factorization.

102421010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10242108.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 102421010 is about 10120.3265757583. The cubic root of 102421010 is about 467.8748325993.

Adding to 102421010 its reverse (10124201), we get a palindrome (112545211).

The spelling of 102421010 in words is "one hundred two million, four hundred twenty-one thousand, ten".