142393747 has 4 divisors (see below), whose sum is σ = 143139456. Its totient is φ = 141648040.

The previous prime is 142393709. The next prime is 142393753. The reversal of 142393747 is 747393241.

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

It is a cyclic number.

It is not a de Polignac number, because 142393747 - 2¹¹ = 142391699 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142393777) 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 3 ways as a sum of consecutive naturals, for example, 372568 + ... + 372949.

It is an arithmetic number, because the mean of its divisors is an integer number (35784864).

Almost surely, 2^142393747 is an apocalyptic number.

142393747 is a deficient number, since it is larger than the sum of its proper divisors (745709).

142393747 is an equidigital number, since it uses as much as digits as its factorization.

142393747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745708.

The product of its digits is 127008, while the sum is 40.

The square root of 142393747 is about 11932.8851079695. The cubic root of 142393747 is about 522.1921106039.

The spelling of 142393747 in words is "one hundred forty-two million, three hundred ninety-three thousand, seven hundred forty-seven".