22241142 has 80 divisors (see below), whose sum is σ = 62168832. Its totient is φ = 5773680.

The previous prime is 22241137. The next prime is 22241143. The reversal of 22241142 is 24114222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22241143) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 11583 + ... + 13365.

Almost surely, 2^22241142 is an apocalyptic number.

22241142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 22241142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31084416).

22241142 is an abundant number, since it is smaller than the sum of its proper divisors (39927690).

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

22241142 is a wasteful number, since it uses less digits than its factorization.

22241142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1815 (or 1806 counting only the distinct ones).

The product of its digits is 256, while the sum is 18.

The square root of 22241142 is about 4716.0515264361. The cubic root of 22241142 is about 281.2239869274.

Adding to 22241142 its reverse (24114222), we get a palindrome (46355364).

Subtracting 22241142 from its reverse (24114222), we obtain a triangular number (1873080 = T₁₉₃₅).

The spelling of 22241142 in words is "twenty-two million, two hundred forty-one thousand, one hundred forty-two".