102478949 has 8 divisors (see below), whose sum is σ = 103306752. Its totient is φ = 101654560.

The previous prime is 102478939. The next prime is 102478969. The reversal of 102478949 is 949874201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102478949 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 (102478939) 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, 107057 + ... + 108009.

It is an arithmetic number, because the mean of its divisors is an integer number (12913344).

Almost surely, 2^102478949 is an apocalyptic number.

It is an amenable number.

102478949 is a deficient number, since it is larger than the sum of its proper divisors (827803).

102478949 is an equidigital number, since it uses as much as digits as its factorization.

102478949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 102478949 is about 10123.1886774870. The cubic root of 102478949 is about 467.9630407051.

The spelling of 102478949 in words is "one hundred two million, four hundred seventy-eight thousand, nine hundred forty-nine".