78332141 has 8 divisors (see below), whose sum is σ = 83039544. Its totient is φ = 73635840.

The previous prime is 78332129. The next prime is 78332153. The reversal of 78332141 is 14123387.

It is an interprime number because it is at equal distance from previous prime (78332129) and next prime (78332153).

It can be written as a sum of positive squares in 4 ways, for example, as 3076516 + 75255625 = 1754^2 + 8675^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-78332141 is a prime.

It is a super-2 number, since 2×78332141² = 12271848627287762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78332341) 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 7 ways as a sum of consecutive naturals, for example, 15101 + ... + 19613.

It is an arithmetic number, because the mean of its divisors is an integer number (10379943).

Almost surely, 2^78332141 is an apocalyptic number.

It is an amenable number.

78332141 is a deficient number, since it is larger than the sum of its proper divisors (4707403).

78332141 is a wasteful number, since it uses less digits than its factorization.

78332141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5551.

The product of its digits is 4032, while the sum is 29.

The square root of 78332141 is about 8850.5446725046. The cubic root of 78332141 is about 427.8714731118.

The spelling of 78332141 in words is "seventy-eight million, three hundred thirty-two thousand, one hundred forty-one".