142023249 has 6 divisors (see below), whose sum is σ = 205144706. Its totient is φ = 94682160.

The previous prime is 142023247. The next prime is 142023289. The reversal of 142023249 is 942320241.

142023249 is a `hidden beast` number, since 1 + 420 + 232 + 4 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 112211649 + 29811600 = 10593^2 + 5460^2 .

It is not a de Polignac number, because 142023249 - 2¹ = 142023247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142023247) 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 in 5 ways as a sum of consecutive naturals, for example, 7890172 + ... + 7890189.

Almost surely, 2^142023249 is an apocalyptic number.

It is an amenable number.

142023249 is a deficient number, since it is larger than the sum of its proper divisors (63121457).

142023249 is a wasteful number, since it uses less digits than its factorization.

142023249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15780367 (or 15780364 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 142023249 is about 11917.3507542574. The cubic root of 142023249 is about 521.7388154772.

The spelling of 142023249 in words is "one hundred forty-two million, twenty-three thousand, two hundred forty-nine".