76542111 has 8 divisors (see below), whose sum is σ = 113395760. Its totient is φ = 51028056.

The previous prime is 76542083. The next prime is 76542113. The reversal of 76542111 is 11124567.

It is a happy number.

76542111 is a `hidden beast` number, since 7 + 6 + 542 + 111 = 666.

It is not a de Polignac number, because 76542111 - 2¹⁵ = 76509343 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2834893 = 76542111 / (7 + 6 + 5 + 4 + 2 + 1 + 1 + 1).

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76542113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1417420 + ... + 1417473.

It is an arithmetic number, because the mean of its divisors is an integer number (14174470).

Almost surely, 2^76542111 is an apocalyptic number.

76542111 is a deficient number, since it is larger than the sum of its proper divisors (36853649).

76542111 is a wasteful number, since it uses less digits than its factorization.

76542111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2834902 (or 2834896 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 76542111 is about 8748.8348367083. The cubic root of 76542111 is about 424.5871164337.

Adding to 76542111 its reverse (11124567), we get a palindrome (87666678).

The spelling of 76542111 in words is "seventy-six million, five hundred forty-two thousand, one hundred eleven".