142522224 has 80 divisors (see below), whose sum is σ = 407286432. Its totient is φ = 42660864.

The previous prime is 142522183. The next prime is 142522231. The reversal of 142522224 is 422225241.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 142522194 and 142522203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20002 + ... + 26174.

Almost surely, 2^142522224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142522224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203643216).

142522224 is an abundant number, since it is smaller than the sum of its proper divisors (264764208).

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

142522224 is a wasteful number, since it uses less digits than its factorization.

142522224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6234 (or 6228 counting only the distinct ones).

The product of its digits is 2560, while the sum is 24.

The square root of 142522224 is about 11938.2672109482. The cubic root of 142522224 is about 522.3491154109.

Adding to 142522224 its reverse (422225241), we get a palindrome (564747465).

The spelling of 142522224 in words is "one hundred forty-two million, five hundred twenty-two thousand, two hundred twenty-four".