140322791 has 4 divisors (see below), whose sum is σ = 160368912. Its totient is φ = 120276672.

The previous prime is 140322761. The next prime is 140322821. The reversal of 140322791 is 197223041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 197223041 = 349 ⋅565109.

It is an interprime number because it is at equal distance from previous prime (140322761) and next prime (140322821).

It is a cyclic number.

It is not a de Polignac number, because 140322791 - 2¹⁴ = 140306407 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 (140322731) 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, 10023050 + ... + 10023063.

It is an arithmetic number, because the mean of its divisors is an integer number (40092228).

Almost surely, 2^140322791 is an apocalyptic number.

140322791 is a deficient number, since it is larger than the sum of its proper divisors (20046121).

140322791 is an equidigital number, since it uses as much as digits as its factorization.

140322791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20046120.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 140322791 is about 11845.7921220997. The cubic root of 140322791 is about 519.6481730070.

The spelling of 140322791 in words is "one hundred forty million, three hundred twenty-two thousand, seven hundred ninety-one".