140206743 has 6 divisors (see below), whose sum is σ = 202520864. Its totient is φ = 93471156.

The previous prime is 140206741. The next prime is 140206771. The reversal of 140206743 is 347602041.

140206743 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 140206743 - 2¹ = 140206741 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 (140206741) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7789255 + ... + 7789272.

Almost surely, 2^140206743 is an apocalyptic number.

140206743 is a deficient number, since it is larger than the sum of its proper divisors (62314121).

140206743 is a wasteful number, since it uses less digits than its factorization.

140206743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15578533 (or 15578530 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 140206743 is about 11840.8928295125. The cubic root of 140206743 is about 519.5048825209.

Adding to 140206743 its reverse (347602041), we get a palindrome (487808784).

The spelling of 140206743 in words is "one hundred forty million, two hundred six thousand, seven hundred forty-three".