142143402 has 8 divisors (see below), whose sum is σ = 284286816. Its totient is φ = 47381132.

The previous prime is 142143377. The next prime is 142143431. The reversal of 142143402 is 204341241.

It is a sphenic number, since it is the product of 3 distinct primes.

142143402 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11845278 + ... + 11845289.

It is an arithmetic number, because the mean of its divisors is an integer number (35535852).

Almost surely, 2^142143402 is an apocalyptic number.

142143402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

142143402 is a wasteful number, since it uses less digits than its factorization.

142143402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23690572.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 142143402 is about 11922.3907837313. The cubic root of 142143402 is about 521.8859059812.

Adding to 142143402 its reverse (204341241), we get a palindrome (346484643).

The spelling of 142143402 in words is "one hundred forty-two million, one hundred forty-three thousand, four hundred two".