420555441 has 4 divisors (see below), whose sum is σ = 560740592. Its totient is φ = 280370292.

The previous prime is 420555427. The next prime is 420555467. The reversal of 420555441 is 144555024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 420555441 - 2⁷ = 420555313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420555399 and 420555408.

It is not an unprimeable number, because it can be changed into a prime (420555241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70092571 + ... + 70092576.

It is an arithmetic number, because the mean of its divisors is an integer number (140185148).

Almost surely, 2^420555441 is an apocalyptic number.

It is an amenable number.

420555441 is a deficient number, since it is larger than the sum of its proper divisors (140185151).

420555441 is a wasteful number, since it uses less digits than its factorization.

420555441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140185150.

The product of its (nonzero) digits is 16000, while the sum is 30.

The square root of 420555441 is about 20507.4484273398. The cubic root of 420555441 is about 749.2172224077.

The spelling of 420555441 in words is "four hundred twenty million, five hundred fifty-five thousand, four hundred forty-one".