140532497 has 4 divisors (see below), whose sum is σ = 160608576. Its totient is φ = 120456420.

The previous prime is 140532487. The next prime is 140532499. The reversal of 140532497 is 794235041.

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: 794235041 = 1949 ⋅407509.

It is not a de Polignac number, because 140532497 - 2¹⁰ = 140531473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140532499) 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, 10038029 + ... + 10038042.

It is an arithmetic number, because the mean of its divisors is an integer number (40152144).

Almost surely, 2^140532497 is an apocalyptic number.

It is an amenable number.

140532497 is a deficient number, since it is larger than the sum of its proper divisors (20076079).

140532497 is an equidigital number, since it uses as much as digits as its factorization.

140532497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20076078.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 140532497 is about 11854.6403150834. The cubic root of 140532497 is about 519.9069076449.

The spelling of 140532497 in words is "one hundred forty million, five hundred thirty-two thousand, four hundred ninety-seven".