142421442402 has 16 divisors (see below), whose sum is σ = 301598348832. Its totient is φ = 44681236800.

The previous prime is 142421442389. The next prime is 142421442407. The reversal of 142421442402 is 204244124241.

It is a self number, because there is not a number n which added to its sum of digits gives 142421442402.

It is not an unprimeable number, because it can be changed into a prime (142421442407) 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, 698144224 + ... + 698144427.

It is an arithmetic number, because the mean of its divisors is an integer number (18849896802).

Almost surely, 2^142421442402 is an apocalyptic number.

142421442402 is an abundant number, since it is smaller than the sum of its proper divisors (159176906430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142421442402 is a wasteful number, since it uses less digits than its factorization.

142421442402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396288673.

The product of its (nonzero) digits is 16384, while the sum is 30.

Adding to 142421442402 its reverse (204244124241), we get a palindrome (346665566643).

The spelling of 142421442402 in words is "one hundred forty-two billion, four hundred twenty-one million, four hundred forty-two thousand, four hundred two".