221462542 has 8 divisors (see below), whose sum is σ = 379650096. Its totient is φ = 94912512.

The previous prime is 221462533. The next prime is 221462551. The reversal of 221462542 is 245264122.

It is an interprime number because it is at equal distance from previous prime (221462533) and next prime (221462551).

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

It is a self number, because there is not a number n which added to its sum of digits gives 221462542.

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 3 ways as a sum of consecutive naturals, for example, 7909363 + ... + 7909390.

It is an arithmetic number, because the mean of its divisors is an integer number (47456262).

Almost surely, 2^221462542 is an apocalyptic number.

221462542 is a deficient number, since it is larger than the sum of its proper divisors (158187554).

221462542 is a wasteful number, since it uses less digits than its factorization.

221462542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15818762.

The product of its digits is 7680, while the sum is 28.

The square root of 221462542 is about 14881.6175868082. The cubic root of 221462542 is about 605.0158609780.

The spelling of 221462542 in words is "two hundred twenty-one million, four hundred sixty-two thousand, five hundred forty-two".