142251345 has 24 divisors (see below), whose sum is σ = 252586152. Its totient is φ = 74016000.

The previous prime is 142251323. The next prime is 142251367. The reversal of 142251345 is 543152241.

142251345 is a `hidden beast` number, since 142 + 2 + 513 + 4 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (142251323) and next prime (142251367).

It can be written as a sum of positive squares in 4 ways, for example, as 10093329 + 132158016 = 3177^2 + 11496^2 .

It is not a de Polignac number, because 142251345 - 2⁷ = 142251217 is a prime.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 36706 + ... + 40395.

It is an arithmetic number, because the mean of its divisors is an integer number (10524423).

Almost surely, 2^142251345 is an apocalyptic number.

142251345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142251345 is a deficient number, since it is larger than the sum of its proper divisors (110334807).

142251345 is a wasteful number, since it uses less digits than its factorization.

142251345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77153 (or 77150 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 142251345 is about 11926.9168270765. The cubic root of 142251345 is about 522.0179784181.

The spelling of 142251345 in words is "one hundred forty-two million, two hundred fifty-one thousand, three hundred forty-five".