124640077 has 2 divisors, whose sum is σ = 124640078. Its totient is φ = 124640076.

The previous prime is 124639993. The next prime is 124640093. The reversal of 124640077 is 770046421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117744201 + 6895876 = 10851^2 + 2626^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124640077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124640177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62320038 + 62320039.

It is an arithmetic number, because the mean of its divisors is an integer number (62320039).

Almost surely, 2^124640077 is an apocalyptic number.

It is an amenable number.

124640077 is a deficient number, since it is larger than the sum of its proper divisors (1).

124640077 is an equidigital number, since it uses as much as digits as its factorization.

124640077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 124640077 is about 11164.2320380759. The cubic root of 124640077 is about 499.5196413255.

Adding to 124640077 its reverse (770046421), we get a palindrome (894686498).

The spelling of 124640077 in words is "one hundred twenty-four million, six hundred forty thousand, seventy-seven".