242620221542 has 16 divisors (see below), whose sum is σ = 367393056912. Its totient is φ = 120156249120.

The previous prime is 242620221497. The next prime is 242620221587. The reversal of 242620221542 is 245122026242.

242620221542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (242620221497) and next prime (242620221587).

It is a junction number, because it is equal to n+sod(n) for n = 242620221499 and 242620221508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1229192 + ... + 1412852.

It is an arithmetic number, because the mean of its divisors is an integer number (22962066057).

Almost surely, 2^242620221542 is an apocalyptic number.

242620221542 is a deficient number, since it is larger than the sum of its proper divisors (124772835370).

242620221542 is a wasteful number, since it uses less digits than its factorization.

242620221542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189943.

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 242620221542 its reverse (245122026242), we get a palindrome (487742247784).

The spelling of 242620221542 in words is "two hundred forty-two billion, six hundred twenty million, two hundred twenty-one thousand, five hundred forty-two".