72140077 has 2 divisors, whose sum is σ = 72140078. Its totient is φ = 72140076.

The previous prime is 72140053. The next prime is 72140083. The reversal of 72140077 is 77004127.

72140077 is nontrivially palindromic in base 14.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54449641 + 17690436 = 7379^2 + 4206^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72140077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72140177) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36070038 + 36070039.

It is an arithmetic number, because the mean of its divisors is an integer number (36070039).

Almost surely, 2^72140077 is an apocalyptic number.

It is an amenable number.

72140077 is a deficient number, since it is larger than the sum of its proper divisors (1).

72140077 is an equidigital number, since it uses as much as digits as its factorization.

72140077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2744, while the sum is 28.

The square root of 72140077 is about 8493.5314798969. The cubic root of 72140077 is about 416.2863786378.

The spelling of 72140077 in words is "seventy-two million, one hundred forty thousand, seventy-seven".