103404256021 has 4 divisors (see below), whose sum is σ = 112804642944. Its totient is φ = 94003869100.

The previous prime is 103404255937. The next prime is 103404256027. The reversal of 103404256021 is 120652404301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 103404256021 - 2⁷ = 103404255893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103404256027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4700193445 + ... + 4700193466.

It is an arithmetic number, because the mean of its divisors is an integer number (28201160736).

Almost surely, 2^103404256021 is an apocalyptic number.

103404256021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

103404256021 is a deficient number, since it is larger than the sum of its proper divisors (9400386923).

103404256021 is an equidigital number, since it uses as much as digits as its factorization.

103404256021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9400386922.

The product of its (nonzero) digits is 5760, while the sum is 28.

The spelling of 103404256021 in words is "one hundred three billion, four hundred four million, two hundred fifty-six thousand, twenty-one".