102940245 has 24 divisors (see below), whose sum is σ = 181359672. Its totient is φ = 54000000.

The previous prime is 102940241. The next prime is 102940259. The reversal of 102940245 is 542049201.

It can be written as a sum of positive squares in 4 ways, for example, as 181476 + 102758769 = 426^2 + 10137^2 .

It is not a de Polignac number, because 102940245 - 2² = 102940241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102940241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16006 + ... + 21495.

It is an arithmetic number, because the mean of its divisors is an integer number (7556653).

Almost surely, 2^102940245 is an apocalyptic number.

102940245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102940245 is a deficient number, since it is larger than the sum of its proper divisors (78419427).

102940245 is a wasteful number, since it uses less digits than its factorization.

102940245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37573 (or 37570 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 102940245 is about 10145.9472204423. The cubic root of 102940245 is about 468.6641485440.

Adding to 102940245 its reverse (542049201), we get a palindrome (644989446).

The spelling of 102940245 in words is "one hundred two million, nine hundred forty thousand, two hundred forty-five".