221061742 has 8 divisors (see below), whose sum is σ = 361737432. Its totient is φ = 100482600.

The previous prime is 221061733. The next prime is 221061769. The reversal of 221061742 is 247160122.

221061742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

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, 5024109 + ... + 5024152.

It is an arithmetic number, because the mean of its divisors is an integer number (45217179).

Almost surely, 2^221061742 is an apocalyptic number.

221061742 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221061742 is a deficient number, since it is larger than the sum of its proper divisors (140675690).

221061742 is a wasteful number, since it uses less digits than its factorization.

221061742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10048274.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 221061742 is about 14868.1452104827. The cubic root of 221061742 is about 604.6506573226.

The spelling of 221061742 in words is "two hundred twenty-one million, sixty-one thousand, seven hundred forty-two".