102440959 has 4 divisors (see below), whose sum is σ = 103737760. Its totient is φ = 101144160.

The previous prime is 102440911. The next prime is 102440969. The reversal of 102440959 is 959044201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 959044201 = 2311 ⋅414991.

It is a cyclic number.

It is not a de Polignac number, because 102440959 - 2¹⁷ = 102309887 is a prime.

It is a super-3 number, since 3×102440959³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102440969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648282 + ... + 648439.

It is an arithmetic number, because the mean of its divisors is an integer number (25934440).

Almost surely, 2^102440959 is an apocalyptic number.

102440959 is a deficient number, since it is larger than the sum of its proper divisors (1296801).

102440959 is an equidigital number, since it uses as much as digits as its factorization.

102440959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296800.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 102440959 is about 10121.3121184953. The cubic root of 102440959 is about 467.9052073213.

The spelling of 102440959 in words is "one hundred two million, four hundred forty thousand, nine hundred fifty-nine".