142402224 has 20 divisors (see below), whose sum is σ = 367872536. Its totient is φ = 47467392.

The previous prime is 142402219. The next prime is 142402229. The reversal of 142402224 is 422204241.

It is an interprime number because it is at equal distance from previous prime (142402219) and next prime (142402229).

It is a self number, because there is not a number n which added to its sum of digits gives 142402224.

It is not an unprimeable number, because it can be changed into a prime (142402229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1483309 + ... + 1483404.

Almost surely, 2^142402224 is an apocalyptic number.

It is an amenable number.

142402224 is an abundant number, since it is smaller than the sum of its proper divisors (225470312).

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

142402224 is a wasteful number, since it uses less digits than its factorization.

142402224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2966724 (or 2966718 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 142402224 is about 11933.2402975889. The cubic root of 142402224 is about 522.2024727974.

Adding to 142402224 its reverse (422204241), we get a palindrome (564606465).

The spelling of 142402224 in words is "one hundred forty-two million, four hundred two thousand, two hundred twenty-four".