420666754 has 8 divisors (see below), whose sum is σ = 633830400. Its totient is φ = 209389956.

The previous prime is 420666739. The next prime is 420666767. The reversal of 420666754 is 457666024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 471154 + ... + 472045.

It is an arithmetic number, because the mean of its divisors is an integer number (79228800).

Almost surely, 2^420666754 is an apocalyptic number.

420666754 is a deficient number, since it is larger than the sum of its proper divisors (213163646).

420666754 is a wasteful number, since it uses less digits than its factorization.

420666754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943424.

The product of its (nonzero) digits is 241920, while the sum is 40.

The square root of 420666754 is about 20510.1622129129. The cubic root of 420666754 is about 749.2833177439.

The spelling of 420666754 in words is "four hundred twenty million, six hundred sixty-six thousand, seven hundred fifty-four".