102442445 has 32 divisors (see below), whose sum is σ = 145981440. Its totient is φ = 67533120.

The previous prime is 102442429. The next prime is 102442447. The reversal of 102442445 is 544244201.

It is not a de Polignac number, because 102442445 - 2⁴ = 102442429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102442447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 285176 + ... + 285534.

It is an arithmetic number, because the mean of its divisors is an integer number (4561920).

Almost surely, 2^102442445 is an apocalyptic number.

It is an amenable number.

102442445 is a deficient number, since it is larger than the sum of its proper divisors (43538995).

102442445 is a wasteful number, since it uses less digits than its factorization.

102442445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665.

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 102442445 is about 10121.3855276835. The cubic root of 102442445 is about 467.9074697749.

Adding to 102442445 its reverse (544244201), we get a palindrome (646686646).

The spelling of 102442445 in words is "one hundred two million, four hundred forty-two thousand, four hundred forty-five".