420154072 has 32 divisors (see below), whose sum is σ = 851669280. Its totient is φ = 193167360.

The previous prime is 420154069. The next prime is 420154123. The reversal of 420154072 is 270451024.

It is a congruent number.

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, 19672 + ... + 35032.

It is an arithmetic number, because the mean of its divisors is an integer number (26614665).

Almost surely, 2^420154072 is an apocalyptic number.

It is an amenable number.

420154072 is an abundant number, since it is smaller than the sum of its proper divisors (431515208).

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

420154072 is a wasteful number, since it uses less digits than its factorization.

420154072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15643 (or 15639 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 420154072 is about 20497.6601591499. The cubic root of 420154072 is about 748.9788009827.

The spelling of 420154072 in words is "four hundred twenty million, one hundred fifty-four thousand, seventy-two".