140023206 has 24 divisors (see below), whose sum is σ = 305398704. Its totient is φ = 46364400.

The previous prime is 140023201. The next prime is 140023211. The reversal of 140023206 is 602320041.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (140023201) and next prime (140023211).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140023201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23041 + ... + 28476.

It is an arithmetic number, because the mean of its divisors is an integer number (12724946).

Almost surely, 2^140023206 is an apocalyptic number.

140023206 is an abundant number, since it is smaller than the sum of its proper divisors (165375498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140023206 is a wasteful number, since it uses less digits than its factorization.

140023206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51676 (or 51673 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 140023206 is about 11833.1401580477. The cubic root of 140023206 is about 519.2780983663.

Adding to 140023206 its reverse (602320041), we get a palindrome (742343247).

The spelling of 140023206 in words is "one hundred forty million, twenty-three thousand, two hundred six".