103440240 has 240 divisors, whose sum is σ = 382663008. Its totient is φ = 25878528.

The previous prime is 103440229. The next prime is 103440251. The reversal of 103440240 is 42044301.

It is an interprime number because it is at equal distance from previous prime (103440229) and next prime (103440251).

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 330324 + ... + 330636.

Almost surely, 2^103440240 is an apocalyptic number.

103440240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 103440240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191331504).

103440240 is an abundant number, since it is smaller than the sum of its proper divisors (279222768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

103440240 is a wasteful number, since it uses less digits than its factorization.

103440240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358 (or 340 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 103440240 is about 10170.5575068430. The cubic root of 103440240 is about 469.4217121861.

Adding to 103440240 its reverse (42044301), we get a palindrome (145484541).

The spelling of 103440240 in words is "one hundred three million, four hundred forty thousand, two hundred forty".