140206522 has 8 divisors (see below), whose sum is σ = 210360276. Its totient is φ = 70086432.

The previous prime is 140206519. The next prime is 140206537. The reversal of 140206522 is 225602041.

140206522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 138744841 + 1461681 = 11779^2 + 1209^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×140206522² = 39315737622672968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 140206493 and 140206502.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10518 + ... + 19774.

Almost surely, 2^140206522 is an apocalyptic number.

140206522 is a deficient number, since it is larger than the sum of its proper divisors (70153754).

140206522 is an equidigital number, since it uses as much as digits as its factorization.

140206522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16832.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 140206522 is about 11840.8834974422. The cubic root of 140206522 is about 519.5046095653.

Adding to 140206522 its reverse (225602041), we get a palindrome (365808563).

The spelling of 140206522 in words is "one hundred forty million, two hundred six thousand, five hundred twenty-two".