206042757 has 8 divisors (see below), whose sum is σ = 274824480. Its totient is φ = 137311440.

The previous prime is 206042741. The next prime is 206042761. The reversal of 206042757 is 757240602.

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

It is not a de Polignac number, because 206042757 - 2⁴ = 206042741 is a prime.

It is a super-2 number, since 2×206042757² = 84907235424322098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206042777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1719 + ... + 20372.

It is an arithmetic number, because the mean of its divisors is an integer number (34353060).

Almost surely, 2^206042757 is an apocalyptic number.

It is an amenable number.

206042757 is a deficient number, since it is larger than the sum of its proper divisors (68781723).

206042757 is a wasteful number, since it uses less digits than its factorization.

206042757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25203.

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 206042757 is about 14354.1895277999. The cubic root of 206042757 is about 590.6349164260.

The spelling of 206042757 in words is "two hundred six million, forty-two thousand, seven hundred fifty-seven".