420761867 has 4 divisors (see below), whose sum is σ = 420803376. Its totient is φ = 420720360.

The previous prime is 420761857. The next prime is 420761879. The reversal of 420761867 is 768167024.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 420761867 - 2¹⁴ = 420745483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420761857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5642 + ... + 29552.

It is an arithmetic number, because the mean of its divisors is an integer number (105200844).

Almost surely, 2^420761867 is an apocalyptic number.

420761867 is a deficient number, since it is larger than the sum of its proper divisors (41509).

420761867 is a wasteful number, since it uses less digits than its factorization.

420761867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41508.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 420761867 is about 20512.4807617216. The cubic root of 420761867 is about 749.3397846210.

The spelling of 420761867 in words is "four hundred twenty million, seven hundred sixty-one thousand, eight hundred sixty-seven".