77142067 has 2 divisors, whose sum is σ = 77142068. Its totient is φ = 77142066.

The previous prime is 77142061. The next prime is 77142103. The reversal of 77142067 is 76024177.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77142067 is a prime.

It is not a weakly prime, because it can be changed into another prime (77142061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38571033 + 38571034.

It is an arithmetic number, because the mean of its divisors is an integer number (38571034).

Almost surely, 2^77142067 is an apocalyptic number.

77142067 is a deficient number, since it is larger than the sum of its proper divisors (1).

77142067 is an equidigital number, since it uses as much as digits as its factorization.

77142067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16464, while the sum is 34.

The square root of 77142067 is about 8783.0556755608. The cubic root of 77142067 is about 425.6935701793.

The spelling of 77142067 in words is "seventy-seven million, one hundred forty-two thousand, sixty-seven".