240128101 has 2 divisors, whose sum is σ = 240128102. Its totient is φ = 240128100.

The previous prime is 240128087. The next prime is 240128117. The reversal of 240128101 is 101821042.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221861025 + 18267076 = 14895^2 + 4274^2 .

It is a cyclic number.

It is not a de Polignac number, because 240128101 - 2¹⁵ = 240095333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240128191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120064050 + 120064051.

It is an arithmetic number, because the mean of its divisors is an integer number (120064051).

Almost surely, 2^240128101 is an apocalyptic number.

It is an amenable number.

240128101 is a deficient number, since it is larger than the sum of its proper divisors (1).

240128101 is an equidigital number, since it uses as much as digits as its factorization.

240128101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 240128101 is about 15496.0672752799. The cubic root of 240128101 is about 621.5570480779.

Adding to 240128101 its reverse (101821042), we get a palindrome (341949143).

The spelling of 240128101 in words is "two hundred forty million, one hundred twenty-eight thousand, one hundred one".