420780895 has 8 divisors (see below), whose sum is σ = 515680704. Its totient is φ = 329462304.

The previous prime is 420780863. The next prime is 420780901. The reversal of 420780895 is 598087024.

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

It is a cyclic number.

It is not a de Polignac number, because 420780895 - 2⁵ = 420780863 is a prime.

It is a Duffinian number.

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, 895044 + ... + 895513.

It is an arithmetic number, because the mean of its divisors is an integer number (64460088).

Almost surely, 2^420780895 is an apocalyptic number.

420780895 is a deficient number, since it is larger than the sum of its proper divisors (94899809).

420780895 is a wasteful number, since it uses less digits than its factorization.

420780895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1790609.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 420780895 is about 20512.9445716601. The cubic root of 420780895 is about 749.3510801808.

The spelling of 420780895 in words is "four hundred twenty million, seven hundred eighty thousand, eight hundred ninety-five".