140257111 has 4 divisors (see below), whose sum is σ = 140790672. Its totient is φ = 139723552.

The previous prime is 140257109. The next prime is 140257129. The reversal of 140257111 is 111752041.

140257111 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, and also an emirpimes, since its reverse is a distinct semiprime: 111752041 = 47 ⋅2377703.

It is a cyclic number.

It is not a de Polignac number, because 140257111 - 2¹ = 140257109 is a prime.

It is a super-3 number, since 3×140257111³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140257211) 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, 266386 + ... + 266911.

It is an arithmetic number, because the mean of its divisors is an integer number (35197668).

Almost surely, 2^140257111 is an apocalyptic number.

140257111 is a deficient number, since it is larger than the sum of its proper divisors (533561).

140257111 is an equidigital number, since it uses as much as digits as its factorization.

140257111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533560.

The product of its (nonzero) digits is 280, while the sum is 22.

The square root of 140257111 is about 11843.0195051769. The cubic root of 140257111 is about 519.5670842111.

The spelling of 140257111 in words is "one hundred forty million, two hundred fifty-seven thousand, one hundred eleven".