403232020421 has 16 divisors (see below), whose sum is σ = 437716407744. Its totient is φ = 369977497344.

The previous prime is 403232020409. The next prime is 403232020463. The reversal of 403232020421 is 124020232304.

It is a cyclic number.

It is not a de Polignac number, because 403232020421 - 2³⁴ = 386052151237 is a prime.

It is a super-3 number, since 3×403232020421³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403232020481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145046 + ... + 909671.

It is an arithmetic number, because the mean of its divisors is an integer number (27357275484).

Almost surely, 2^403232020421 is an apocalyptic number.

It is an amenable number.

403232020421 is a deficient number, since it is larger than the sum of its proper divisors (34484387323).

403232020421 is a wasteful number, since it uses less digits than its factorization.

403232020421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055300.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 403232020421 its reverse (124020232304), we get a palindrome (527252252725).

The spelling of 403232020421 in words is "four hundred three billion, two hundred thirty-two million, twenty thousand, four hundred twenty-one".