420009722 has 8 divisors (see below), whose sum is σ = 687288672. Its totient is φ = 190913500.

The previous prime is 420009679. The next prime is 420009817. The reversal of 420009722 is 227900024.

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

It is a junction number, because it is equal to n+sod(n) for n = 420009691 and 420009700.

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, 9545654 + ... + 9545697.

It is an arithmetic number, because the mean of its divisors is an integer number (85911084).

Almost surely, 2^420009722 is an apocalyptic number.

420009722 is a deficient number, since it is larger than the sum of its proper divisors (267278950).

420009722 is a wasteful number, since it uses less digits than its factorization.

420009722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19091364.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 420009722 is about 20494.1387230593. The cubic root of 420009722 is about 748.8930169961.

Adding to 420009722 its reverse (227900024), we get a palindrome (647909746).

The spelling of 420009722 in words is "four hundred twenty million, nine thousand, seven hundred twenty-two".