102440401 has 16 divisors (see below), whose sum is σ = 120766464. Its totient is φ = 85075344.

The previous prime is 102440369. The next prime is 102440407. The reversal of 102440401 is 104044201.

It is a cyclic number.

It is not a de Polignac number, because 102440401 - 2⁵ = 102440369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102440407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32376 + ... + 35398.

It is an arithmetic number, because the mean of its divisors is an integer number (7547904).

Almost surely, 2^102440401 is an apocalyptic number.

It is an amenable number.

102440401 is a deficient number, since it is larger than the sum of its proper divisors (18326063).

102440401 is a wasteful number, since it uses less digits than its factorization.

102440401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3180.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 102440401 is about 10121.2845528619. The cubic root of 102440401 is about 467.9043577536.

Adding to 102440401 its reverse (104044201), we get a palindrome (206484602).

It can be divided in two parts, 1024 and 40401, that multiplied together give a square (41370624 = 6432²).

The spelling of 102440401 in words is "one hundred two million, four hundred forty thousand, four hundred one".