102137245 has 8 divisors (see below), whose sum is σ = 140073984. Its totient is φ = 70036944.

The previous prime is 102137239. The next prime is 102137249. The reversal of 102137245 is 542731201.

It is a happy number.

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 102137245 - 2³ = 102137237 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 (102137249) 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, 1459069 + ... + 1459138.

It is an arithmetic number, because the mean of its divisors is an integer number (17509248).

Almost surely, 2^102137245 is an apocalyptic number.

It is an amenable number.

102137245 is a deficient number, since it is larger than the sum of its proper divisors (37936739).

102137245 is an equidigital number, since it uses as much as digits as its factorization.

102137245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2918219.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 102137245 is about 10106.2972942616. The cubic root of 102137245 is about 467.4423389664.

Adding to 102137245 its reverse (542731201), we get a palindrome (644868446).

The spelling of 102137245 in words is "one hundred two million, one hundred thirty-seven thousand, two hundred forty-five".