139712233 has 4 divisors (see below), whose sum is σ = 139762260. Its totient is φ = 139662208.

The previous prime is 139712207. The next prime is 139712249. The reversal of 139712233 is 332217931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 332217931 = 37 ⋅8978863.

It can be written as a sum of positive squares in 2 ways, for example, as 2985984 + 136726249 = 1728^2 + 11693^2 .

It is a cyclic number.

It is not a de Polignac number, because 139712233 - 2⁵ = 139712201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139712195 and 139712204.

It is not an unprimeable number, because it can be changed into a prime (139712933) 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, 20560 + ... + 26497.

It is an arithmetic number, because the mean of its divisors is an integer number (34940565).

Almost surely, 2^139712233 is an apocalyptic number.

It is an amenable number.

139712233 is a deficient number, since it is larger than the sum of its proper divisors (50027).

139712233 is an equidigital number, since it uses as much as digits as its factorization.

139712233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50026.

The product of its digits is 6804, while the sum is 31.

The square root of 139712233 is about 11819.9929357001. The cubic root of 139712233 is about 518.8933974695.

The spelling of 139712233 in words is "one hundred thirty-nine million, seven hundred twelve thousand, two hundred thirty-three".