42211220 has 24 divisors (see below), whose sum is σ = 88905600. Its totient is φ = 16834592.

The previous prime is 42211219. The next prime is 42211259. The reversal of 42211220 is 2211224.

It is a junction number, because it is equal to n+sod(n) for n = 42211195 and 42211204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4241 + ... + 10119.

It is an arithmetic number, because the mean of its divisors is an integer number (3704400).

Almost surely, 2^42211220 is an apocalyptic number.

It is an amenable number.

42211220 is an abundant number, since it is smaller than the sum of its proper divisors (46694380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42211220 is a wasteful number, since it uses less digits than its factorization.

42211220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6247 (or 6245 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 42211220 is about 6497.0162382435. The cubic root of 42211220 is about 348.1843938449.

Adding to 42211220 its reverse (2211224), we get a palindrome (44422444).

The spelling of 42211220 in words is "forty-two million, two hundred eleven thousand, two hundred twenty".