103421423440 has 40 divisors (see below), whose sum is σ = 240498857088. Its totient is φ = 41360991360.

The previous prime is 103421423429. The next prime is 103421423453. The reversal of 103421423440 is 44324124301.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 103421423399 and 103421423408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331669 + ... + 562891.

Almost surely, 2^103421423440 is an apocalyptic number.

103421423440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103421423440 is an abundant number, since it is smaller than the sum of its proper divisors (137077433648).

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

103421423440 is a wasteful number, since it uses less digits than its factorization.

103421423440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236827 (or 236821 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 103421423440 its reverse (44324124301), we get a palindrome (147745547741).

The spelling of 103421423440 in words is "one hundred three billion, four hundred twenty-one million, four hundred twenty-three thousand, four hundred forty".