420880802 has 4 divisors (see below), whose sum is σ = 631321206. Its totient is φ = 210440400.

The previous prime is 420880787. The next prime is 420880819. The reversal of 420880802 is 208088024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 418161601 + 2719201 = 20449^2 + 1649^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 105220199 + ... + 105220202.

Almost surely, 2^420880802 is an apocalyptic number.

420880802 is a deficient number, since it is larger than the sum of its proper divisors (210440404).

420880802 is a wasteful number, since it uses less digits than its factorization.

420880802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210440403.

The product of its (nonzero) digits is 8192, while the sum is 32.

The square root of 420880802 is about 20515.3796455245. The cubic root of 420880802 is about 749.4103822189.

The spelling of 420880802 in words is "four hundred twenty million, eight hundred eighty thousand, eight hundred two".