142760991 has 4 divisors (see below), whose sum is σ = 190347992. Its totient is φ = 95173992.

The previous prime is 142760963. The next prime is 142760993. The reversal of 142760991 is 199067241.

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

It is not a de Polignac number, because 142760991 - 2¹¹ = 142758943 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 (142760993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23793496 + ... + 23793501.

It is an arithmetic number, because the mean of its divisors is an integer number (47586998).

Almost surely, 2^142760991 is an apocalyptic number.

142760991 is a deficient number, since it is larger than the sum of its proper divisors (47587001).

142760991 is an equidigital number, since it uses as much as digits as its factorization.

142760991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47587000.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 142760991 is about 11948.2630955298. The cubic root of 142760991 is about 522.6406492386.

The spelling of 142760991 in words is "one hundred forty-two million, seven hundred sixty thousand, nine hundred ninety-one".