140197507 has 4 divisors (see below), whose sum is σ = 140279776. Its totient is φ = 140115240.

The previous prime is 140197493. The next prime is 140197537. The reversal of 140197507 is 705791041.

140197507 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.

It is a cyclic number.

It is not a de Polignac number, because 140197507 - 2¹¹ = 140195459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140197537) 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, 38523 + ... + 42004.

It is an arithmetic number, because the mean of its divisors is an integer number (35069944).

Almost surely, 2^140197507 is an apocalyptic number.

140197507 is a deficient number, since it is larger than the sum of its proper divisors (82269).

140197507 is an equidigital number, since it uses as much as digits as its factorization.

140197507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82268.

The product of its (nonzero) digits is 8820, while the sum is 34.

The square root of 140197507 is about 11840.5028187151. The cubic root of 140197507 is about 519.4934749562.

The spelling of 140197507 in words is "one hundred forty million, one hundred ninety-seven thousand, five hundred seven".