420403146 has 8 divisors (see below), whose sum is σ = 840806304. Its totient is φ = 140134380.

The previous prime is 420403127. The next prime is 420403171. The reversal of 420403146 is 641304024.

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

420403146 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35033590 + ... + 35033601.

It is an arithmetic number, because the mean of its divisors is an integer number (105100788).

Almost surely, 2^420403146 is an apocalyptic number.

420403146 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

420403146 is a wasteful number, since it uses less digits than its factorization.

420403146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70067196.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 420403146 is about 20503.7349280564. The cubic root of 420403146 is about 749.1267739184.

The spelling of 420403146 in words is "four hundred twenty million, four hundred three thousand, one hundred forty-six".