40420222 has 8 divisors (see below), whose sum is σ = 60748272. Its totient is φ = 20170800.

The previous prime is 40420157. The next prime is 40420231. The reversal of 40420222 is 22202404.

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 = 40420196 and 40420205.

It is a congruent number.

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, 18354 + ... + 20437.

It is an arithmetic number, because the mean of its divisors is an integer number (7593534).

Almost surely, 2^40420222 is an apocalyptic number.

40420222 is a deficient number, since it is larger than the sum of its proper divisors (20328050).

40420222 is a wasteful number, since it uses less digits than its factorization.

40420222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39314.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 40420222 is about 6357.6899892964. The cubic root of 40420222 is about 343.1886356251.

Adding to 40420222 its reverse (22202404), we get a palindrome (62622626).

The spelling of 40420222 in words is "forty million, four hundred twenty thousand, two hundred twenty-two".