420154122 has 16 divisors (see below), whose sum is σ = 840726432. Its totient is φ = 139981680.

The previous prime is 420154069. The next prime is 420154123. The reversal of 420154122 is 221451024.

It is not an unprimeable number, because it can be changed into a prime (420154123) 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 7 ways as a sum of consecutive naturals, for example, 3508 + ... + 29199.

It is an arithmetic number, because the mean of its divisors is an integer number (52545402).

Almost surely, 2^420154122 is an apocalyptic number.

420154122 is an abundant number, since it is smaller than the sum of its proper divisors (420572310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420154122 is a wasteful number, since it uses less digits than its factorization.

420154122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34853.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 420154122 is about 20497.6613788012. The cubic root of 420154122 is about 748.9788306931.

The spelling of 420154122 in words is "four hundred twenty million, one hundred fifty-four thousand, one hundred twenty-two".