78103142 has 8 divisors (see below), whose sum is σ = 126166656. Its totient is φ = 36047592.

The previous prime is 78103141. The next prime is 78103153. The reversal of 78103142 is 24130187.

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

It is a super-2 number, since 2×78103142² = 12200201580544328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 3003967 = 78103142 / (7 + 8 + 1 + 0 + 3 + 1 + 4 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78103141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1501958 + ... + 1502009.

It is an arithmetic number, because the mean of its divisors is an integer number (15770832).

Almost surely, 2^78103142 is an apocalyptic number.

78103142 is a deficient number, since it is larger than the sum of its proper divisors (48063514).

78103142 is a wasteful number, since it uses less digits than its factorization.

78103142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3003982.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 78103142 is about 8837.5982031319. The cubic root of 78103142 is about 427.4541145192.

The spelling of 78103142 in words is "seventy-eight million, one hundred three thousand, one hundred forty-two".