420902002 has 8 divisors (see below), whose sum is σ = 631518300. Its totient is φ = 210395904.

The previous prime is 420901993. The next prime is 420902039. The reversal of 420902002 is 200209024.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 409212441 + 11689561 = 20229^2 + 3419^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17227 + ... + 33742.

Almost surely, 2^420902002 is an apocalyptic number.

420902002 is a deficient number, since it is larger than the sum of its proper divisors (210616298).

420902002 is a wasteful number, since it uses less digits than its factorization.

420902002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55100.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 420902002 is about 20515.8963245577. The cubic root of 420902002 is about 749.4229647469.

The spelling of 420902002 in words is "four hundred twenty million, nine hundred two thousand, two".