142431402 has 16 divisors (see below), whose sum is σ = 285838560. Its totient is φ = 47314512.

The previous prime is 142431379. The next prime is 142431409. The reversal of 142431402 is 204134241.

142431402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (142431409) 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, 38752 + ... + 42267.

It is an arithmetic number, because the mean of its divisors is an integer number (17864910).

Almost surely, 2^142431402 is an apocalyptic number.

142431402 is an abundant number, since it is smaller than the sum of its proper divisors (143407158).

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

142431402 is a wasteful number, since it uses less digits than its factorization.

142431402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81317.

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

The square root of 142431402 is about 11934.4627864014. The cubic root of 142431402 is about 522.2381365269.

Adding to 142431402 its reverse (204134241), we get a palindrome (346565643).

The spelling of 142431402 in words is "one hundred forty-two million, four hundred thirty-one thousand, four hundred two".