102137449 has 8 divisors (see below), whose sum is σ = 106337160. Its totient is φ = 97982976.

The previous prime is 102137419. The next prime is 102137459. The reversal of 102137449 is 944731201.

It can be written as a sum of positive squares in 4 ways, for example, as 26708224 + 75429225 = 5168^2 + 8685^2 .

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 102137449 - 2²³ = 93748841 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102137449.

It is not an unprimeable number, because it can be changed into a prime (102137419) 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, 6664 + ... + 15769.

It is an arithmetic number, because the mean of its divisors is an integer number (13292145).

Almost surely, 2^102137449 is an apocalyptic number.

It is an amenable number.

102137449 is a deficient number, since it is larger than the sum of its proper divisors (4199711).

102137449 is a wasteful number, since it uses less digits than its factorization.

102137449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22619.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 102137449 is about 10106.3073869737. The cubic root of 102137449 is about 467.4426501757.

The spelling of 102137449 in words is "one hundred two million, one hundred thirty-seven thousand, four hundred forty-nine".