434051021 has 4 divisors (see below), whose sum is σ = 459583452. Its totient is φ = 408518592.

The previous prime is 434051011. The next prime is 434051027. The reversal of 434051021 is 120150434.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120150434 = 2 ⋅60075217.

It can be written as a sum of positive squares in 2 ways, for example, as 224670121 + 209380900 = 14989^2 + 14470^2 .

It is a cyclic number.

It is not a de Polignac number, because 434051021 - 2¹⁴ = 434034637 is a prime.

It is a super-2 number, since 2×434051021² = 376800577662284882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 434050984 and 434051002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434051027) 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 3 ways as a sum of consecutive naturals, for example, 12766190 + ... + 12766223.

It is an arithmetic number, because the mean of its divisors is an integer number (114895863).

Almost surely, 2^434051021 is an apocalyptic number.

It is an amenable number.

434051021 is a deficient number, since it is larger than the sum of its proper divisors (25532431).

434051021 is a wasteful number, since it uses less digits than its factorization.

434051021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25532430.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 434051021 is about 20833.8911631985. The cubic root of 434051021 is about 757.1470955415.

The spelling of 434051021 in words is "four hundred thirty-four million, fifty-one thousand, twenty-one".