420287492 has 6 divisors (see below), whose sum is σ = 735503118. Its totient is φ = 210143744.

The previous prime is 420287471. The next prime is 420287501. The reversal of 420287492 is 294782024.

It can be written as a sum of positive squares in only one way, i.e., 408686656 + 11600836 = 20216^2 + 3406^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52535933 + ... + 52535940.

It is an arithmetic number, because the mean of its divisors is an integer number (122583853).

Almost surely, 2^420287492 is an apocalyptic number.

It is an amenable number.

420287492 is a deficient number, since it is larger than the sum of its proper divisors (315215626).

420287492 is a wasteful number, since it uses less digits than its factorization.

420287492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105071877 (or 105071875 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 420287492 is about 20500.9144186302. The cubic root of 420287492 is about 749.0580720427.

The spelling of 420287492 in words is "four hundred twenty million, two hundred eighty-seven thousand, four hundred ninety-two".