103242121040 has 20 divisors (see below), whose sum is σ = 240037931604. Its totient is φ = 41296848384.

The previous prime is 103242121019. The next prime is 103242121061. The reversal of 103242121040 is 40121242301.

It is an interprime number because it is at equal distance from previous prime (103242121019) and next prime (103242121061).

It can be written as a sum of positive squares in 2 ways, for example, as 61103884864 + 42138236176 = 247192^2 + 205276^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 645263177 + ... + 645263336.

Almost surely, 2^103242121040 is an apocalyptic number.

103242121040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103242121040 is an abundant number, since it is smaller than the sum of its proper divisors (136795810564).

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

103242121040 is a wasteful number, since it uses less digits than its factorization.

103242121040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290526526 (or 1290526520 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 103242121040 its reverse (40121242301), we get a palindrome (143363363341).

The spelling of 103242121040 in words is "one hundred three billion, two hundred forty-two million, one hundred twenty-one thousand, forty".