76240427 has 4 divisors (see below), whose sum is σ = 80725176. Its totient is φ = 71755680.

The previous prime is 76240421. The next prime is 76240429. The reversal of 76240427 is 72404267.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72404267 = 13 ⋅5569559.

It is a cyclic number.

It is not a de Polignac number, because 76240427 - 2¹⁰ = 76239403 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 76240393 and 76240402.

It is not an unprimeable number, because it can be changed into a prime (76240421) 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, 2242349 + ... + 2242382.

It is an arithmetic number, because the mean of its divisors is an integer number (20181294).

Almost surely, 2^76240427 is an apocalyptic number.

76240427 is a deficient number, since it is larger than the sum of its proper divisors (4484749).

76240427 is a wasteful number, since it uses less digits than its factorization.

76240427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4484748.

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 76240427 is about 8731.5764326953. The cubic root of 76240427 is about 424.0285576914.

It can be divided in two parts, 76240 and 427, that added together give a palindrome (76667).

The spelling of 76240427 in words is "seventy-six million, two hundred forty thousand, four hundred twenty-seven".