140749 has 4 divisors (see below), whose sum is σ = 160864. Its totient is φ = 120636.

The previous prime is 140741. The next prime is 140759. The reversal of 140749 is 947041.

140749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 947041 = 199 ⋅4759.

It is a cyclic number.

It is not a de Polignac number, because 140749 - 2³ = 140741 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140741) 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, 10047 + ... + 10060.

It is an arithmetic number, because the mean of its divisors is an integer number (40216).

2¹⁴⁰⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

140749 is a deficient number, since it is larger than the sum of its proper divisors (20115).

140749 is an equidigital number, since it uses as much as digits as its factorization.

140749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20114.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 140749 is about 375.1652969026. The cubic root of 140749 is about 52.0173758500.

The spelling of 140749 in words is "one hundred forty thousand, seven hundred forty-nine".