76124381 has 2 divisors, whose sum is σ = 76124382. Its totient is φ = 76124380.

The previous prime is 76124359. The next prime is 76124441. The reversal of 76124381 is 18342167.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74822500 + 1301881 = 8650^2 + 1141^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76124381 is a prime.

It is a super-2 number, since 2×76124381² = 11589842765266322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p_4456436 and since 76124381 and 4456436 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76124341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38062190 + 38062191.

It is an arithmetic number, because the mean of its divisors is an integer number (38062191).

Almost surely, 2^76124381 is an apocalyptic number.

It is an amenable number.

76124381 is a deficient number, since it is larger than the sum of its proper divisors (1).

76124381 is an equidigital number, since it uses as much as digits as its factorization.

76124381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 32.

The square root of 76124381 is about 8724.9287103105. The cubic root of 76124381 is about 423.8133096615.

The spelling of 76124381 in words is "seventy-six million, one hundred twenty-four thousand, three hundred eighty-one".