420780998 has 16 divisors (see below), whose sum is σ = 718488576. Its totient is φ = 182948040.

The previous prime is 420780959. The next prime is 420781007. The reversal of 420780998 is 899087024.

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, 415286 + ... + 416297.

It is an arithmetic number, because the mean of its divisors is an integer number (44905536).

Almost surely, 2^420780998 is an apocalyptic number.

420780998 is a deficient number, since it is larger than the sum of its proper divisors (297707578).

420780998 is a wasteful number, since it uses less digits than its factorization.

420780998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831619.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 420780998 is about 20512.9470822698. The cubic root of 420780998 is about 749.3511413236.

The spelling of 420780998 in words is "four hundred twenty million, seven hundred eighty thousand, nine hundred ninety-eight".