142449073 has 16 divisors (see below), whose sum is σ = 159279120. Its totient is φ = 126491904.

The previous prime is 142449071. The next prime is 142449079. The reversal of 142449073 is 370944241.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 36626704 + 105822369 = 6052^2 + 10287^2 .

It is a cyclic number.

It is not a de Polignac number, because 142449073 - 2¹ = 142449071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142449071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140115 + ... + 141127.

It is an arithmetic number, because the mean of its divisors is an integer number (9954945).

Almost surely, 2^142449073 is an apocalyptic number.

142449073 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

142449073 is a deficient number, since it is larger than the sum of its proper divisors (16830047).

142449073 is a wasteful number, since it uses less digits than its factorization.

142449073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 142449073 is about 11935.2030983976. The cubic root of 142449073 is about 522.2597330952.

The spelling of 142449073 in words is "one hundred forty-two million, four hundred forty-nine thousand, seventy-three".