142641224 has 16 divisors (see below), whose sum is σ = 291766320. Its totient is φ = 64836880.

The previous prime is 142641221. The next prime is 142641229. The reversal of 142641224 is 422146241.

It is a junction number, because it is equal to n+sod(n) for n = 142641193 and 142641202.

It is not an unprimeable number, because it can be changed into a prime (142641221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 810374 + ... + 810549.

It is an arithmetic number, because the mean of its divisors is an integer number (18235395).

Almost surely, 2^142641224 is an apocalyptic number.

It is an amenable number.

142641224 is an abundant number, since it is smaller than the sum of its proper divisors (149125096).

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

142641224 is a wasteful number, since it uses less digits than its factorization.

142641224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620940 (or 1620936 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

The square root of 142641224 is about 11943.2501439097. The cubic root of 142641224 is about 522.4944547384.

Adding to 142641224 its reverse (422146241), we get a palindrome (564787465).

The spelling of 142641224 in words is "one hundred forty-two million, six hundred forty-one thousand, two hundred twenty-four".