142545446 has 4 divisors (see below), whose sum is σ = 213818172. Its totient is φ = 71272722.

The previous prime is 142545443. The next prime is 142545449. The reversal of 142545446 is 644545241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 644545241 = 16741 ⋅38501.

It is an interprime number because it is at equal distance from previous prime (142545443) and next prime (142545449).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142545443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35636360 + ... + 35636363.

It is an arithmetic number, because the mean of its divisors is an integer number (53454543).

Almost surely, 2^142545446 is an apocalyptic number.

142545446 is a deficient number, since it is larger than the sum of its proper divisors (71272726).

142545446 is an equidigital number, since it uses as much as digits as its factorization.

142545446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71272725.

The product of its digits is 76800, while the sum is 35.

The square root of 142545446 is about 11939.2397580415. The cubic root of 142545446 is about 522.3774836941.

The spelling of 142545446 in words is "one hundred forty-two million, five hundred forty-five thousand, four hundred forty-six".