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140497 = 720071
BaseRepresentation
bin100010010011010001
321010201121
4202103101
513443442
63002241
71123420
oct422321
9233647
10140497
1196615
1269381
134bc46
14392b7
152b967
hex224d1

140497 has 4 divisors (see below), whose sum is σ = 160576. Its totient is φ = 120420.

The previous prime is 140477. The next prime is 140521. The reversal of 140497 is 794041.

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.

It is a cyclic number.

It is not a de Polignac number, because 140497 - 211 = 138449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10029 + ... + 10042.

It is an arithmetic number, because the mean of its divisors is an integer number (40144).

2140497 is an apocalyptic number.

It is an amenable number.

140497 is a deficient number, since it is larger than the sum of its proper divisors (20079).

140497 is an equidigital number, since it uses as much as digits as its factorization.

140497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20078.

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

The square root of 140497 is about 374.8292944795. The cubic root of 140497 is about 51.9863129658.

The spelling of 140497 in words is "one hundred forty thousand, four hundred ninety-seven".

Divisors: 1 7 20071 140497