420671242 has 16 divisors (see below), whose sum is σ = 659915712. Its totient is φ = 200740320.

The previous prime is 420671201. The next prime is 420671257. The reversal of 420671242 is 242176024.

It is a happy number.

It is a super-3 number, since 3×420671242³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 420671242.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11017 + ... + 31027.

It is an arithmetic number, because the mean of its divisors is an integer number (41244732).

Almost surely, 2^420671242 is an apocalyptic number.

420671242 is a deficient number, since it is larger than the sum of its proper divisors (239244470).

420671242 is a wasteful number, since it uses less digits than its factorization.

420671242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20493.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 420671242 is about 20510.2716217996. The cubic root of 420671242 is about 749.2859823801.

The spelling of 420671242 in words is "four hundred twenty million, six hundred seventy-one thousand, two hundred forty-two".