42211722 has 16 divisors (see below), whose sum is σ = 96484032. Its totient is φ = 12060480.

The previous prime is 42211717. The next prime is 42211747. The reversal of 42211722 is 22711224.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 502479 + ... + 502562.

It is an arithmetic number, because the mean of its divisors is an integer number (6030252).

Almost surely, 2^42211722 is an apocalyptic number.

42211722 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

42211722 is an abundant number, since it is smaller than the sum of its proper divisors (54272310).

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

42211722 is a wasteful number, since it uses less digits than its factorization.

42211722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005053.

The product of its digits is 448, while the sum is 21.

The square root of 42211722 is about 6497.0548712474. The cubic root of 42211722 is about 348.1857741089.

Adding to 42211722 its reverse (22711224), we get a palindrome (64922946).

It can be divided in two parts, 42 and 211722, that multiplied together give a square (8892324 = 2982²).

The spelling of 42211722 in words is "forty-two million, two hundred eleven thousand, seven hundred twenty-two".