142225022 has 4 divisors (see below), whose sum is σ = 213337536. Its totient is φ = 71112510.

The previous prime is 142225021. The next prime is 142225033. The reversal of 142225022 is 220522241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 220522241 = 53 ⋅4160797.

It is a junction number, because it is equal to n+sod(n) for n = 142224985 and 142225003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142225021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35556254 + ... + 35556257.

It is an arithmetic number, because the mean of its divisors is an integer number (53334384).

Almost surely, 2^142225022 is an apocalyptic number.

142225022 is a deficient number, since it is larger than the sum of its proper divisors (71112514).

142225022 is an equidigital number, since it uses as much as digits as its factorization.

142225022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71112513.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 142225022 is about 11925.8132636730. The cubic root of 142225022 is about 521.9857773707.

Adding to 142225022 its reverse (220522241), we get a palindrome (362747263).

The spelling of 142225022 in words is "one hundred forty-two million, two hundred twenty-five thousand, twenty-two".