140720229 has 24 divisors (see below), whose sum is σ = 222497912. Its totient is φ = 85173120.

The previous prime is 140720227. The next prime is 140720231. The reversal of 140720229 is 922027041.

It is an interprime number because it is at equal distance from previous prime (140720227) and next prime (140720231).

It can be written as a sum of positive squares in 4 ways, for example, as 18507204 + 122213025 = 4302^2 + 11055^2 .

It is not a de Polignac number, because 140720229 - 2¹ = 140720227 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140720227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2722 + ... + 16995.

Almost surely, 2^140720229 is an apocalyptic number.

It is an amenable number.

140720229 is a deficient number, since it is larger than the sum of its proper divisors (81777683).

140720229 is a wasteful number, since it uses less digits than its factorization.

140720229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19797 (or 19794 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 140720229 is about 11862.5557532936. Note that the first 3 decimals coincide. The cubic root of 140720229 is about 520.1383125665.

The spelling of 140720229 in words is "one hundred forty million, seven hundred twenty thousand, two hundred twenty-nine".