142244546 has 4 divisors (see below), whose sum is σ = 213366822. Its totient is φ = 71122272.

The previous prime is 142244537. The next prime is 142244549. The reversal of 142244546 is 645442241.

142244546 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 130759225 + 11485321 = 11435^2 + 3389^2 .

It is a super-2 number, since 2×142244546² = 40467021733492232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142244549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35561135 + ... + 35561138.

Almost surely, 2^142244546 is an apocalyptic number.

142244546 is a deficient number, since it is larger than the sum of its proper divisors (71122276).

142244546 is an equidigital number, since it uses as much as digits as its factorization.

142244546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71122275.

The product of its digits is 30720, while the sum is 32.

The square root of 142244546 is about 11926.6317961108. The cubic root of 142244546 is about 522.0096615505.

Adding to 142244546 its reverse (645442241), we get a palindrome (787686787).

The spelling of 142244546 in words is "one hundred forty-two million, two hundred forty-four thousand, five hundred forty-six".