78141235 has 24 divisors (see below), whose sum is σ = 101291904. Its totient is φ = 57805440.

The previous prime is 78141233. The next prime is 78141241. The reversal of 78141235 is 53214187.

It is not a de Polignac number, because 78141235 - 2¹ = 78141233 is a prime.

It is a super-2 number, since 2×78141235² = 12212105214650450, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78141197 and 78141206.

It is not an unprimeable number, because it can be changed into a prime (78141233) 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 23 ways as a sum of consecutive naturals, for example, 81519 + ... + 82471.

It is an arithmetic number, because the mean of its divisors is an integer number (4220496).

Almost surely, 2^78141235 is an apocalyptic number.

78141235 is a deficient number, since it is larger than the sum of its proper divisors (23150669).

78141235 is a wasteful number, since it uses less digits than its factorization.

78141235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035 (or 1012 counting only the distinct ones).

The product of its digits is 6720, while the sum is 31.

The square root of 78141235 is about 8839.7531074120. The cubic root of 78141235 is about 427.5235968417.

The spelling of 78141235 in words is "seventy-eight million, one hundred forty-one thousand, two hundred thirty-five".