102302421 has 32 divisors (see below), whose sum is σ = 151901568. Its totient is φ = 60840960.

The previous prime is 102302371. The next prime is 102302477. The reversal of 102302421 is 124203201.

It is not a de Polignac number, because 102302421 - 2¹³ = 102294229 is a prime.

It is a super-2 number, since 2×102302421² = 20931570684922482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102302421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102302491) 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 31 ways as a sum of consecutive naturals, for example, 218830 + ... + 219296.

It is an arithmetic number, because the mean of its divisors is an integer number (4746924).

Almost surely, 2^102302421 is an apocalyptic number.

It is an amenable number.

102302421 is a deficient number, since it is larger than the sum of its proper divisors (49599147).

102302421 is a wasteful number, since it uses less digits than its factorization.

102302421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 102302421 is about 10114.4659275713. The cubic root of 102302421 is about 467.6941852991.

Adding to 102302421 its reverse (124203201), we get a palindrome (226505622).

The spelling of 102302421 in words is "one hundred two million, three hundred two thousand, four hundred twenty-one".