102478642 has 16 divisors (see below), whose sum is σ = 177903360. Its totient is φ = 43363008.

The previous prime is 102478633. The next prime is 102478681. The reversal of 102478642 is 246874201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 102478598 and 102478607.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45223 + ... + 47434.

It is an arithmetic number, because the mean of its divisors is an integer number (11118960).

Almost surely, 2^102478642 is an apocalyptic number.

102478642 is a deficient number, since it is larger than the sum of its proper divisors (75424718).

102478642 is an equidigital number, since it uses as much as digits as its factorization.

102478642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92745.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 102478642 is about 10123.1735142691. The cubic root of 102478642 is about 467.9625734066.

The spelling of 102478642 in words is "one hundred two million, four hundred seventy-eight thousand, six hundred forty-two".