78125102 has 24 divisors (see below), whose sum is σ = 129276000. Its totient is φ = 35383040.

The previous prime is 78125059. The next prime is 78125119. The reversal of 78125102 is 20152187.

It is a super-2 number, since 2×78125102² = 12207063125020808, 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 11 ways as a sum of consecutive naturals, for example, 108299 + ... + 109017.

It is an arithmetic number, because the mean of its divisors is an integer number (5386500).

Almost surely, 2^78125102 is an apocalyptic number.

78125102 is a deficient number, since it is larger than the sum of its proper divisors (51150898).

78125102 is a wasteful number, since it uses less digits than its factorization.

78125102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192 (or 1181 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 78125102 is about 8838.8405348213. The cubic root of 78125102 is about 427.4941727145.

Adding to 78125102 its reverse (20152187), we get a palindrome (98277289).

The spelling of 78125102 in words is "seventy-eight million, one hundred twenty-five thousand, one hundred two".