102012445 has 16 divisors (see below), whose sum is σ = 125286912. Its totient is φ = 79717120.

The previous prime is 102012437. The next prime is 102012457. The reversal of 102012445 is 544210201.

It is not a de Polignac number, because 102012445 - 2³ = 102012437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38844 + ... + 41386.

It is an arithmetic number, because the mean of its divisors is an integer number (7830432).

Almost surely, 2^102012445 is an apocalyptic number.

It is an amenable number.

102012445 is a deficient number, since it is larger than the sum of its proper divisors (23274467).

102012445 is a wasteful number, since it uses less digits than its factorization.

102012445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2732.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 102012445 is about 10100.1210388787. The cubic root of 102012445 is about 467.2518743932.

Adding to 102012445 its reverse (544210201), we get a palindrome (646222646).

The spelling of 102012445 in words is "one hundred two million, twelve thousand, four hundred forty-five".