142221463550 has 24 divisors (see below), whose sum is σ = 265366437336. Its totient is φ = 56709119840.

The previous prime is 142221463487. The next prime is 142221463561. The reversal of 142221463550 is 55364122241.

It is a self number, because there is not a number n which added to its sum of digits gives 142221463550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4470632 + ... + 4502331.

It is an arithmetic number, because the mean of its divisors is an integer number (11056934889).

Almost surely, 2^142221463550 is an apocalyptic number.

142221463550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142221463550 is a deficient number, since it is larger than the sum of its proper divisors (123144973786).

142221463550 is a wasteful number, since it uses less digits than its factorization.

142221463550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8973292 (or 8973287 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 142221463550 its reverse (55364122241), we get a palindrome (197585585791).

The spelling of 142221463550 in words is "one hundred forty-two billion, two hundred twenty-one million, four hundred sixty-three thousand, five hundred fifty".