420884942 has 4 divisors (see below), whose sum is σ = 631327416. Its totient is φ = 210442470.

The previous prime is 420884939. The next prime is 420884977. The reversal of 420884942 is 249488024.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 420884942.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105221234 + ... + 105221237.

It is an arithmetic number, because the mean of its divisors is an integer number (157831854).

Almost surely, 2^420884942 is an apocalyptic number.

420884942 is a deficient number, since it is larger than the sum of its proper divisors (210442474).

420884942 is a wasteful number, since it uses less digits than its factorization.

420884942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210442473.

The product of its (nonzero) digits is 147456, while the sum is 41.

The square root of 420884942 is about 20515.4805451883. The cubic root of 420884942 is about 749.4128394062.

The spelling of 420884942 in words is "four hundred twenty million, eight hundred eighty-four thousand, nine hundred forty-two".