420120461 has 4 divisors (see below), whose sum is σ = 438386592. Its totient is φ = 401854332.

The previous prime is 420120443. The next prime is 420120469. The reversal of 420120461 is 164021024.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420120461 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420120469) 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 3 ways as a sum of consecutive naturals, for example, 9133031 + ... + 9133076.

It is an arithmetic number, because the mean of its divisors is an integer number (109596648).

Almost surely, 2^420120461 is an apocalyptic number.

It is an amenable number.

420120461 is a deficient number, since it is larger than the sum of its proper divisors (18266131).

420120461 is a wasteful number, since it uses less digits than its factorization.

420120461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18266130.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 420120461 is about 20496.8402686853. The cubic root of 420120461 is about 748.9588284698.

Adding to 420120461 its reverse (164021024), we get a palindrome (584141485).

The spelling of 420120461 in words is "four hundred twenty million, one hundred twenty thousand, four hundred sixty-one".