421072802 has 16 divisors (see below), whose sum is σ = 649255992. Its totient is φ = 204664320.

The previous prime is 421072801. The next prime is 421072811. The reversal of 421072802 is 208270124.

It can be written as a sum of positive squares in 4 ways, for example, as 417344041 + 3728761 = 20429^2 + 1931^2 .

It is not an unprimeable number, because it can be changed into a prime (421072801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123602 + ... + 126962.

Almost surely, 2^421072802 is an apocalyptic number.

421072802 is a deficient number, since it is larger than the sum of its proper divisors (228183190).

421072802 is a wasteful number, since it uses less digits than its factorization.

421072802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5093.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 421072802 is about 20520.0585281816. The cubic root of 421072802 is about 749.5243217782.

The spelling of 421072802 in words is "four hundred twenty-one million, seventy-two thousand, eight hundred two".