142402422321 has 12 divisors (see below), whose sum is σ = 209573376948. Its totient is φ = 93143722464.

The previous prime is 142402422317. The next prime is 142402422347. The reversal of 142402422321 is 123224204241.

It is a happy number.

142402422321 is a `hidden beast` number, since 1 + 424 + 0 + 2 + 4 + 2 + 232 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 84855690000 + 57546732321 = 291300^2 + 239889^2 .

It is not a de Polignac number, because 142402422321 - 2² = 142402422317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142402422521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 149268310 + ... + 149269263.

It is an arithmetic number, because the mean of its divisors is an integer number (17464448079).

Almost surely, 2^142402422321 is an apocalyptic number.

It is an amenable number.

142402422321 is a deficient number, since it is larger than the sum of its proper divisors (67170954627).

142402422321 is a wasteful number, since it uses less digits than its factorization.

142402422321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298537632 (or 298537629 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 142402422321 its reverse (123224204241), we get a palindrome (265626626562).

The spelling of 142402422321 in words is "one hundred forty-two billion, four hundred two million, four hundred twenty-two thousand, three hundred twenty-one".