120424311402257 has 2 divisors, whose sum is σ = 120424311402258. Its totient is φ = 120424311402256.

The previous prime is 120424311402097. The next prime is 120424311402277. The reversal of 120424311402257 is 752204113424021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65994680411521 + 54429630990736 = 8123711^2 + 7377644^2 .

It is a cyclic number.

It is not a de Polignac number, because 120424311402257 - 2¹⁸ = 120424311140113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120424311402257.

It is not a weakly prime, because it can be changed into another prime (120424311402277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60212155701128 + 60212155701129.

It is an arithmetic number, because the mean of its divisors is an integer number (60212155701129).

Almost surely, 2^{120424311402257} is an apocalyptic number.

It is an amenable number.

120424311402257 is a deficient number, since it is larger than the sum of its proper divisors (1).

120424311402257 is an equidigital number, since it uses as much as digits as its factorization.

120424311402257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 107520, while the sum is 38.

Adding to 120424311402257 its reverse (752204113424021), we get a palindrome (872628424826278).

The spelling of 120424311402257 in words is "one hundred twenty trillion, four hundred twenty-four billion, three hundred eleven million, four hundred two thousand, two hundred fifty-seven".