209010756042 has 48 divisors (see below), whose sum is σ = 494110742112. Its totient is φ = 63325654560.

The previous prime is 209010756011. The next prime is 209010756047. The reversal of 209010756042 is 240657010902.

209010756042 is a `hidden beast` number, since 2 + 0 + 90 + 1 + 0 + 7 + 560 + 4 + 2 = 666.

It is a super-2 number, since 2×209010756042² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 209010755988 and 209010756006.

It is not an unprimeable number, because it can be changed into a prime (209010756047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1097268 + ... + 1273584.

It is an arithmetic number, because the mean of its divisors is an integer number (10293973794).

Almost surely, 2^209010756042 is an apocalyptic number.

209010756042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

209010756042 is an abundant number, since it is smaller than the sum of its proper divisors (285099986070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

209010756042 is a wasteful number, since it uses less digits than its factorization.

209010756042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182323 (or 182320 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

Adding to 209010756042 its reverse (240657010902), we get a palindrome (449667766944).

The spelling of 209010756042 in words is "two hundred nine billion, ten million, seven hundred fifty-six thousand, forty-two".