140297597 has 4 divisors (see below), whose sum is σ = 153051936. Its totient is φ = 127543260.

The previous prime is 140297569. The next prime is 140297603. The reversal of 140297597 is 795792041.

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 140297597 - 2⁸ = 140297341 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 (140297527) 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, 6377153 + ... + 6377174.

It is an arithmetic number, because the mean of its divisors is an integer number (38262984).

Almost surely, 2^140297597 is an apocalyptic number.

It is an amenable number.

140297597 is a deficient number, since it is larger than the sum of its proper divisors (12754339).

140297597 is a wasteful number, since it uses less digits than its factorization.

140297597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12754338.

The product of its (nonzero) digits is 158760, while the sum is 44.

The square root of 140297597 is about 11844.7286587748. The cubic root of 140297597 is about 519.6170713839.

The spelling of 140297597 in words is "one hundred forty million, two hundred ninety-seven thousand, five hundred ninety-seven".