424004155242021 has 24 divisors (see below), whose sum is σ = 621080572746816. Its totient is φ = 278686353718080.

The previous prime is 424004155241899. The next prime is 424004155242113. The reversal of 424004155242021 is 120242551400424.

424004155242021 is a `hidden beast` number, since 4 + 2 + 4 + 0 + 0 + 41 + 552 + 42 + 0 + 21 = 666.

It is not a de Polignac number, because 424004155242021 - 2⁷ = 424004155241893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424004155241021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99275046 + ... + 103457928.

It is an arithmetic number, because the mean of its divisors is an integer number (25878357197784).

Almost surely, 2^{424004155242021} is an apocalyptic number.

It is an amenable number.

424004155242021 is a deficient number, since it is larger than the sum of its proper divisors (197076417504795).

424004155242021 is a wasteful number, since it uses less digits than its factorization.

424004155242021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4341593 (or 4341590 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 36.

The spelling of 424004155242021 in words is "four hundred twenty-four trillion, four billion, one hundred fifty-five million, two hundred forty-two thousand, twenty-one".