403204120021 has 8 divisors (see below), whose sum is σ = 431066885184. Its totient is φ = 375801896640.

The previous prime is 403204120001. The next prime is 403204120031. The reversal of 403204120021 is 120021402304.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 403204120021 - 2¹³ = 403204111829 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 (403204120001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115133635 + ... + 115137136.

It is an arithmetic number, because the mean of its divisors is an integer number (53883360648).

Almost surely, 2^403204120021 is an apocalyptic number.

It is an amenable number.

403204120021 is a deficient number, since it is larger than the sum of its proper divisors (27862765163).

403204120021 is a wasteful number, since it uses less digits than its factorization.

403204120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230270891.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 403204120021 its reverse (120021402304), we get a palindrome (523225522325).

The spelling of 403204120021 in words is "four hundred three billion, two hundred four million, one hundred twenty thousand, twenty-one".