142741751 has 4 divisors (see below), whose sum is σ = 142774632. Its totient is φ = 142708872.

The previous prime is 142741733. The next prime is 142741757. The reversal of 142741751 is 157147241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 157147241 = 43 ⋅3654587.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142741751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142741757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8720 + ... + 19013.

It is an arithmetic number, because the mean of its divisors is an integer number (35693658).

Almost surely, 2^142741751 is an apocalyptic number.

142741751 is a deficient number, since it is larger than the sum of its proper divisors (32881).

142741751 is an equidigital number, since it uses as much as digits as its factorization.

142741751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32880.

The product of its digits is 7840, while the sum is 32.

The square root of 142741751 is about 11947.4579304553. The cubic root of 142741751 is about 522.6171693001.

Adding to 142741751 its reverse (157147241), we get a palindrome (299888992).

The spelling of 142741751 in words is "one hundred forty-two million, seven hundred forty-one thousand, seven hundred fifty-one".