142402330 has 24 divisors (see below), whose sum is σ = 298174068. Its totient is φ = 48823488.

The previous prime is 142402327. The next prime is 142402331. The reversal of 142402330 is 33204241.

142402330 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 141776649 + 625681 = 11907^2 + 791^2 .

It is a junction number, because it is equal to n+sod(n) for n = 142402298 and 142402307.

It is not an unprimeable number, because it can be changed into a prime (142402331) 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, 144819 + ... + 145798.

Almost surely, 2^142402330 is an apocalyptic number.

142402330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142402330 is an abundant number, since it is smaller than the sum of its proper divisors (155771738).

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

142402330 is a wasteful number, since it uses less digits than its factorization.

142402330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290638 (or 290631 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 142402330 is about 11933.2447389635. The cubic root of 142402330 is about 522.2026023680.

Adding to 142402330 its reverse (33204241), we get a palindrome (175606571).

The spelling of 142402330 in words is "one hundred forty-two million, four hundred two thousand, three hundred thirty".