420252346 has 4 divisors (see below), whose sum is σ = 630378522. Its totient is φ = 210126172.

The previous prime is 420252319. The next prime is 420252347. The reversal of 420252346 is 643252024.

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., 349877025 + 70375321 = 18705^2 + 8389^2 .

It is a super-2 number, since 2×420252346² = 353224068637007432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (420252347) 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 as a sum of consecutive naturals, namely, 105063085 + ... + 105063088.

Almost surely, 2^420252346 is an apocalyptic number.

420252346 is a deficient number, since it is larger than the sum of its proper divisors (210126176).

420252346 is a wasteful number, since it uses less digits than its factorization.

420252346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210126175.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 420252346 is about 20500.0572194323. The cubic root of 420252346 is about 749.0371917886.

The spelling of 420252346 in words is "four hundred twenty million, two hundred fifty-two thousand, three hundred forty-six".