403055421 has 16 divisors (see below), whose sum is σ = 541114944. Its totient is φ = 266857344.

The previous prime is 403055399. The next prime is 403055437. The reversal of 403055421 is 124550304.

It is not a de Polignac number, because 403055421 - 2⁹ = 403054909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 403055391 and 403055400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403055321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 325215 + ... + 326451.

It is an arithmetic number, because the mean of its divisors is an integer number (33819684).

Almost surely, 2^403055421 is an apocalyptic number.

It is an amenable number.

403055421 is a deficient number, since it is larger than the sum of its proper divisors (138059523).

403055421 is a wasteful number, since it uses less digits than its factorization.

403055421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1900.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 403055421 is about 20076.2402107566. The cubic root of 403055421 is about 738.6775876756.

The spelling of 403055421 in words is "four hundred three million, fifty-five thousand, four hundred twenty-one".