420040622 has 4 divisors (see below), whose sum is σ = 630060936. Its totient is φ = 210020310.

The previous prime is 420040603. The next prime is 420040631. The reversal of 420040622 is 226040024.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 420040594 and 420040603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105010154 + ... + 105010157.

It is an arithmetic number, because the mean of its divisors is an integer number (157515234).

Almost surely, 2^420040622 is an apocalyptic number.

420040622 is a deficient number, since it is larger than the sum of its proper divisors (210020314).

420040622 is a wasteful number, since it uses less digits than its factorization.

420040622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210020313.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 420040622 is about 20494.8925832755. The cubic root of 420040622 is about 748.9113818303.

Adding to 420040622 its reverse (226040024), we get a palindrome (646080646).

The spelling of 420040622 in words is "four hundred twenty million, forty thousand, six hundred twenty-two".