206426045 has 16 divisors (see below), whose sum is σ = 284574720. Its totient is φ = 140811264.

The previous prime is 206426029. The next prime is 206426047. The reversal of 206426045 is 540624602.

It is a cyclic number.

It is not a de Polignac number, because 206426045 - 2⁴ = 206426029 is a prime.

It is a super-2 number, since 2×206426045² = 85223424108684050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 206425999 and 206426017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206426047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8525 + ... + 22034.

It is an arithmetic number, because the mean of its divisors is an integer number (17785920).

Almost surely, 2^206426045 is an apocalyptic number.

It is an amenable number.

206426045 is a deficient number, since it is larger than the sum of its proper divisors (78148675).

206426045 is a wasteful number, since it uses less digits than its factorization.

206426045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30764.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 206426045 is about 14367.5344092158. The cubic root of 206426045 is about 591.0009295271. Note that the first 3 decimals are identical.

The spelling of 206426045 in words is "two hundred six million, four hundred twenty-six thousand, forty-five".