102450021 has 8 divisors (see below), whose sum is σ = 139931904. Its totient is φ = 66634080.

The previous prime is 102450017. The next prime is 102450031. The reversal of 102450021 is 120054201.

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

It is not a de Polignac number, because 102450021 - 2² = 102450017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102450031) 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 7 ways as a sum of consecutive naturals, for example, 416341 + ... + 416586.

It is an arithmetic number, because the mean of its divisors is an integer number (17491488).

Almost surely, 2^102450021 is an apocalyptic number.

It is an amenable number.

102450021 is a deficient number, since it is larger than the sum of its proper divisors (37481883).

102450021 is an equidigital number, since it uses as much as digits as its factorization.

102450021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832971.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 102450021 is about 10121.7597778252. The cubic root of 102450021 is about 467.9190039901.

The spelling of 102450021 in words is "one hundred two million, four hundred fifty thousand, twenty-one".