103040040420 has 72 divisors (see below), whose sum is σ = 315649446840. Its totient is φ = 27205286400.

The previous prime is 103040040403. The next prime is 103040040487. The reversal of 103040040420 is 24040040301.

It can be written as a sum of positive squares in 4 ways, for example, as 52068850596 + 50971189824 = 228186^2 + 225768^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 103040040393 and 103040040402.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2815705 + ... + 2852064.

It is an arithmetic number, because the mean of its divisors is an integer number (4384020095).

Almost surely, 2^103040040420 is an apocalyptic number.

103040040420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103040040420 is an abundant number, since it is smaller than the sum of its proper divisors (212609406420).

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

103040040420 is a wasteful number, since it uses less digits than its factorization.

103040040420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5667885 (or 5667880 counting only the distinct ones).

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

Adding to 103040040420 its reverse (24040040301), we get a palindrome (127080080721).

The spelling of 103040040420 in words is "one hundred three billion, forty million, forty thousand, four hundred twenty".