78435141 has 4 divisors (see below), whose sum is σ = 104580192. Its totient is φ = 52290092.

The previous prime is 78435113. The next prime is 78435167. The reversal of 78435141 is 14153487.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 78435141 - 2⁵ = 78435109 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78435101) 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, 13072521 + ... + 13072526.

It is an arithmetic number, because the mean of its divisors is an integer number (26145048).

Almost surely, 2^78435141 is an apocalyptic number.

It is an amenable number.

78435141 is a deficient number, since it is larger than the sum of its proper divisors (26145051).

78435141 is a wasteful number, since it uses less digits than its factorization.

78435141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26145050.

The product of its digits is 13440, while the sum is 33.

The square root of 78435141 is about 8856.3616118584. The cubic root of 78435141 is about 428.0589289839.

The spelling of 78435141 in words is "seventy-eight million, four hundred thirty-five thousand, one hundred forty-one".