420454142 has 4 divisors (see below), whose sum is σ = 630681216. Its totient is φ = 210227070.

The previous prime is 420454127. The next prime is 420454159. The reversal of 420454142 is 241454024.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105113534 + ... + 105113537.

It is an arithmetic number, because the mean of its divisors is an integer number (157670304).

Almost surely, 2^420454142 is an apocalyptic number.

420454142 is a deficient number, since it is larger than the sum of its proper divisors (210227074).

420454142 is a wasteful number, since it uses less digits than its factorization.

420454142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210227073.

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 420454142 is about 20504.9784686549. The cubic root of 420454142 is about 749.1570630387.

The spelling of 420454142 in words is "four hundred twenty million, four hundred fifty-four thousand, one hundred forty-two".