78474141 has 6 divisors (see below), whose sum is σ = 113351550. Its totient is φ = 52316088.

The previous prime is 78474139. The next prime is 78474163. The reversal of 78474141 is 14147487.

It can be written as a sum of positive squares in only one way, i.e., 51538041 + 26936100 = 7179^2 + 5190^2 .

It is not a de Polignac number, because 78474141 - 2¹ = 78474139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78474096 and 78474105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78474101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4359666 + ... + 4359683.

It is an arithmetic number, because the mean of its divisors is an integer number (18891925).

Almost surely, 2^78474141 is an apocalyptic number.

It is an amenable number.

78474141 is a deficient number, since it is larger than the sum of its proper divisors (34877409).

78474141 is a wasteful number, since it uses less digits than its factorization.

78474141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8719355 (or 8719352 counting only the distinct ones).

The product of its digits is 25088, while the sum is 36.

The square root of 78474141 is about 8858.5631453413. The cubic root of 78474141 is about 428.1298645868.

The spelling of 78474141 in words is "seventy-eight million, four hundred seventy-four thousand, one hundred forty-one".