102030645 has 32 divisors (see below), whose sum is σ = 174972672. Its totient is φ = 50637312.

The previous prime is 102030637. The next prime is 102030653. The reversal of 102030645 is 546030201.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (102030637) and next prime (102030653).

It is not a de Polignac number, because 102030645 - 2³ = 102030637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8769 + ... + 16761.

It is an arithmetic number, because the mean of its divisors is an integer number (5467896).

Almost surely, 2^102030645 is an apocalyptic number.

102030645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102030645 is a deficient number, since it is larger than the sum of its proper divisors (72942027).

102030645 is a wasteful number, since it uses less digits than its factorization.

102030645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8061.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 102030645 is about 10101.0219779981. The cubic root of 102030645 is about 467.2796601482.

Adding to 102030645 its reverse (546030201), we get a palindrome (648060846).

The spelling of 102030645 in words is "one hundred two million, thirty thousand, six hundred forty-five".