78135102 has 12 divisors (see below), whose sum is σ = 169292760. Its totient is φ = 26045028.

The previous prime is 78135089. The next prime is 78135119. The reversal of 78135102 is 20153187.

It is a super-2 number, since 2×78135102² = 12210188329100808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2170402 + ... + 2170437.

It is an arithmetic number, because the mean of its divisors is an integer number (14107730).

Almost surely, 2^78135102 is an apocalyptic number.

78135102 is an abundant number, since it is smaller than the sum of its proper divisors (91157658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78135102 is a wasteful number, since it uses less digits than its factorization.

78135102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4340847 (or 4340844 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 78135102 is about 8839.4062017762. The cubic root of 78135102 is about 427.5124116639.

Adding to 78135102 its reverse (20153187), we get a palindrome (98288289).

The spelling of 78135102 in words is "seventy-eight million, one hundred thirty-five thousand, one hundred two".