102424445 has 8 divisors (see below), whose sum is σ = 123693144. Its totient is φ = 81417024.

The previous prime is 102424393. The next prime is 102424447. The reversal of 102424445 is 544424201.

It can be written as a sum of positive squares in 4 ways, for example, as 70756 + 102353689 = 266^2 + 10117^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102424445 - 2¹² = 102420349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102424447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64454 + ... + 66023.

It is an arithmetic number, because the mean of its divisors is an integer number (15461643).

Almost surely, 2^102424445 is an apocalyptic number.

It is an amenable number.

102424445 is a deficient number, since it is larger than the sum of its proper divisors (21268699).

102424445 is a wasteful number, since it uses less digits than its factorization.

102424445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130639.

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

The square root of 102424445 is about 10120.4962822976. The cubic root of 102424445 is about 467.8800630758.

Adding to 102424445 its reverse (544424201), we get a palindrome (646848646).

The spelling of 102424445 in words is "one hundred two million, four hundred twenty-four thousand, four hundred forty-five".