206254134442 has 8 divisors (see below), whose sum is σ = 317742855876. Its totient is φ = 100339849152.

The previous prime is 206254134391. The next prime is 206254134461. The reversal of 206254134442 is 244431452602.

It can be written as a sum of positive squares in 2 ways, for example, as 186460739721 + 19793394721 = 431811^2 + 140689^2 .

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

It is a super-2 number, since 2×206254134442² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

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, 1393608943 + ... + 1393609090.

Almost surely, 2^206254134442 is an apocalyptic number.

206254134442 is a deficient number, since it is larger than the sum of its proper divisors (111488721434).

206254134442 is a wasteful number, since it uses less digits than its factorization.

206254134442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2787218072.

The product of its (nonzero) digits is 184320, while the sum is 37.

The spelling of 206254134442 in words is "two hundred six billion, two hundred fifty-four million, one hundred thirty-four thousand, four hundred forty-two".