142021215554 has 16 divisors (see below), whose sum is σ = 219962158080. Its totient is φ = 68701711680.

The previous prime is 142021215551. The next prime is 142021215587. The reversal of 142021215554 is 455512120241.

It is a self number, because there is not a number n which added to its sum of digits gives 142021215554.

It is not an unprimeable number, because it can be changed into a prime (142021215551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66794 + ... + 537125.

It is an arithmetic number, because the mean of its divisors is an integer number (13747634880).

Almost surely, 2^142021215554 is an apocalyptic number.

142021215554 is a deficient number, since it is larger than the sum of its proper divisors (77940942526).

142021215554 is a wasteful number, since it uses less digits than its factorization.

142021215554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607745.

The product of its (nonzero) digits is 16000, while the sum is 32.

Adding to 142021215554 its reverse (455512120241), we get a palindrome (597533335795).

The spelling of 142021215554 in words is "one hundred forty-two billion, twenty-one million, two hundred fifteen thousand, five hundred fifty-four".