142393830 has 32 divisors (see below), whose sum is σ = 342093024. Its totient is φ = 37933056.

The previous prime is 142393829. The next prime is 142393831. The reversal of 142393830 is 38393241.

It is a happy number.

142393830 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 is an interprime number because it is at equal distance from previous prime (142393829) and next prime (142393831).

It is a junction number, because it is equal to n+sod(n) for n = 142393791 and 142393800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142393831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39462 + ... + 42918.

It is an arithmetic number, because the mean of its divisors is an integer number (10690407).

Almost surely, 2^142393830 is an apocalyptic number.

142393830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142393830 is an abundant number, since it is smaller than the sum of its proper divisors (199699194).

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

142393830 is a wasteful number, since it uses less digits than its factorization.

142393830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4840.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 142393830 is about 11932.8885857532. Note that the first 3 decimals coincide. The cubic root of 142393830 is about 522.1922120642.

The spelling of 142393830 in words is "one hundred forty-two million, three hundred ninety-three thousand, eight hundred thirty".