140212133 has 4 divisors (see below), whose sum is σ = 140315628. Its totient is φ = 140108640.

The previous prime is 140212043. The next prime is 140212157. The reversal of 140212133 is 331212041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 331212041 = 10501 ⋅31541.

It can be written as a sum of positive squares in 2 ways, for example, as 71537764 + 68674369 = 8458^2 + 8287^2 .

It is a cyclic number.

It is not a de Polignac number, because 140212133 - 2¹⁸ = 139949989 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 (140212183) 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, 49688 + ... + 52433.

It is an arithmetic number, because the mean of its divisors is an integer number (35078907).

Almost surely, 2^140212133 is an apocalyptic number.

It is an amenable number.

140212133 is a deficient number, since it is larger than the sum of its proper divisors (103495).

140212133 is a wasteful number, since it uses less digits than its factorization.

140212133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103494.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 140212133 is about 11841.1204284054. The cubic root of 140212133 is about 519.5115395840.

Adding to 140212133 its reverse (331212041), we get a palindrome (471424174).

The spelling of 140212133 in words is "one hundred forty million, two hundred twelve thousand, one hundred thirty-three".