434154021 has 16 divisors (see below), whose sum is σ = 665228928. Its totient is φ = 246715200.

The previous prime is 434154013. The next prime is 434154031. The reversal of 434154021 is 120451434.

It is not a de Polignac number, because 434154021 - 2³ = 434154013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 434153982 and 434154000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434154031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53310 + ... + 60911.

It is an arithmetic number, because the mean of its divisors is an integer number (41576808).

Almost surely, 2^434154021 is an apocalyptic number.

It is an amenable number.

434154021 is a deficient number, since it is larger than the sum of its proper divisors (231074907).

434154021 is a wasteful number, since it uses less digits than its factorization.

434154021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114412.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 434154021 is about 20836.3629503808. The cubic root of 434154021 is about 757.2069809615.

The spelling of 434154021 in words is "four hundred thirty-four million, one hundred fifty-four thousand, twenty-one".