206997542 has 32 divisors (see below), whose sum is σ = 336949632. Its totient is φ = 95007744.

The previous prime is 206997529. The next prime is 206997607. The reversal of 206997542 is 245799602.

It is a junction number, because it is equal to n+sod(n) for n = 206997493 and 206997502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 563843 + ... + 564209.

It is an arithmetic number, because the mean of its divisors is an integer number (10529676).

Almost surely, 2^206997542 is an apocalyptic number.

206997542 is a deficient number, since it is larger than the sum of its proper divisors (129952090).

206997542 is a wasteful number, since it uses less digits than its factorization.

206997542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 206997542 is about 14387.4091482796. The cubic root of 206997542 is about 591.5458285350.

The spelling of 206997542 in words is "two hundred six million, nine hundred ninety-seven thousand, five hundred forty-two".