102029427 has 18 divisors (see below), whose sum is σ = 156558948. Its totient is φ = 64016832.

The previous prime is 102029423. The next prime is 102029437. The reversal of 102029427 is 724920201.

It is not a de Polignac number, because 102029427 - 2² = 102029423 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102029427.

It is not an unprimeable number, because it can be changed into a prime (102029423) 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 17 ways as a sum of consecutive naturals, for example, 17013 + ... + 22214.

Almost surely, 2^102029427 is an apocalyptic number.

102029427 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

102029427 is a deficient number, since it is larger than the sum of its proper divisors (54529521).

102029427 is a wasteful number, since it uses less digits than its factorization.

102029427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39267 (or 39247 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 102029427 is about 10100.9616868890. The cubic root of 102029427 is about 467.2778007432.

Adding to 102029427 its reverse (724920201), we get a palindrome (826949628).

The spelling of 102029427 in words is "one hundred two million, twenty-nine thousand, four hundred twenty-seven".