140242207 has 4 divisors (see below), whose sum is σ = 160276816. Its totient is φ = 120207600.

The previous prime is 140242183. The next prime is 140242217. The reversal of 140242207 is 702242041.

It is a happy number.

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 140242207 - 2²³ = 131853599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140242217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10017294 + ... + 10017307.

It is an arithmetic number, because the mean of its divisors is an integer number (40069204).

Almost surely, 2^140242207 is an apocalyptic number.

140242207 is a deficient number, since it is larger than the sum of its proper divisors (20034609).

140242207 is an equidigital number, since it uses as much as digits as its factorization.

140242207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20034608.

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 140242207 is about 11842.3902570385. The cubic root of 140242207 is about 519.5486801481.

Adding to 140242207 its reverse (702242041), we get a palindrome (842484248).

The spelling of 140242207 in words is "one hundred forty million, two hundred forty-two thousand, two hundred seven".