841221542 has 16 divisors (see below), whose sum is σ = 1517994240. Its totient is φ = 341548488.

The previous prime is 841221541. The next prime is 841221547. The reversal of 841221542 is 245122148.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (841221541) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1580978 + ... + 1581509.

It is an arithmetic number, because the mean of its divisors is an integer number (94874640).

Almost surely, 2^841221542 is an apocalyptic number.

841221542 is a deficient number, since it is larger than the sum of its proper divisors (676772698).

841221542 is a wasteful number, since it uses less digits than its factorization.

841221542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3162515.

The product of its digits is 5120, while the sum is 29.

The square root of 841221542 is about 29003.8194381361. The cubic root of 841221542 is about 943.9959444849.

The spelling of 841221542 in words is "eight hundred forty-one million, two hundred twenty-one thousand, five hundred forty-two".