78346141 has 2 divisors, whose sum is σ = 78346142. Its totient is φ = 78346140.

The previous prime is 78346123. The next prime is 78346171. The reversal of 78346141 is 14164387.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73462041 + 4884100 = 8571^2 + 2210^2 .

It is a cyclic number.

It is not a de Polignac number, because 78346141 - 2¹¹ = 78344093 is a prime.

It is a super-2 number, since 2×78346141² = 12276235619183762, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78346097 and 78346106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78346171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39173070 + 39173071.

It is an arithmetic number, because the mean of its divisors is an integer number (39173071).

Almost surely, 2^78346141 is an apocalyptic number.

It is an amenable number.

78346141 is a deficient number, since it is larger than the sum of its proper divisors (1).

78346141 is an equidigital number, since it uses as much as digits as its factorization.

78346141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 34.

The square root of 78346141 is about 8851.3355489440. The cubic root of 78346141 is about 427.8969621967.

It can be divided in two parts, 78346 and 141, that added together give a palindrome (78487).

The spelling of 78346141 in words is "seventy-eight million, three hundred forty-six thousand, one hundred forty-one".