221262042 has 8 divisors (see below), whose sum is σ = 442524096. Its totient is φ = 73754012.

The previous prime is 221262037. The next prime is 221262053. The reversal of 221262042 is 240262122.

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

221262042 is an admirable 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, 18438498 + ... + 18438509.

It is an arithmetic number, because the mean of its divisors is an integer number (55315512).

Almost surely, 2^221262042 is an apocalyptic number.

221262042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

221262042 is a wasteful number, since it uses less digits than its factorization.

221262042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36877012.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 221262042 is about 14874.8795625376. The cubic root of 221262042 is about 604.8332231599.

The spelling of 221262042 in words is "two hundred twenty-one million, two hundred sixty-two thousand, forty-two".