22142412 has 18 divisors (see below), whose sum is σ = 55971188. Its totient is φ = 7380792.

The previous prime is 22142411. The next prime is 22142413. The reversal of 22142412 is 21424122.

It is an interprime number because it is at equal distance from previous prime (22142411) and next prime (22142413).

It is a tau number, because it is divible by the number of its divisors (18).

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

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (22142411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 307498 + ... + 307569.

Almost surely, 2^22142412 is an apocalyptic number.

It is an amenable number.

22142412 is an abundant number, since it is smaller than the sum of its proper divisors (33828776).

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

22142412 is a wasteful number, since it uses less digits than its factorization.

22142412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615077 (or 615072 counting only the distinct ones).

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

The square root of 22142412 is about 4705.5724412658. The cubic root of 22142412 is about 280.8072452900.

Adding to 22142412 its reverse (21424122), we get a palindrome (43566534).

It can be divided in two parts, 2 and 2142412, that multiplied together give a palindrome (4284824).

The spelling of 22142412 in words is "twenty-two million, one hundred forty-two thousand, four hundred twelve".