143225242 has 4 divisors (see below), whose sum is σ = 214837866. Its totient is φ = 71612620.

The previous prime is 143225233. The next prime is 143225263. The reversal of 143225242 is 242522341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242522341 = 1039 ⋅233419.

It can be written as a sum of positive squares in only one way, i.e., 118135161 + 25090081 = 10869^2 + 5009^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35806309 + ... + 35806312.

Almost surely, 2^143225242 is an apocalyptic number.

143225242 is a deficient number, since it is larger than the sum of its proper divisors (71612624).

143225242 is an equidigital number, since it uses as much as digits as its factorization.

143225242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71612623.

The product of its digits is 3840, while the sum is 25.

The square root of 143225242 is about 11967.6748786053. The cubic root of 143225242 is about 523.2065692493.

Adding to 143225242 its reverse (242522341), we get a palindrome (385747583).

The spelling of 143225242 in words is "one hundred forty-three million, two hundred twenty-five thousand, two hundred forty-two".