142405938 has 40 divisors (see below), whose sum is σ = 326531568. Its totient is φ = 46362456.

The previous prime is 142405937. The next prime is 142405943. The reversal of 142405938 is 839504241.

142405938 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 (142405937) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3256 + ... + 17187.

Almost surely, 2^142405938 is an apocalyptic number.

142405938 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

142405938 is an abundant number, since it is smaller than the sum of its proper divisors (184125630).

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

142405938 is a wasteful number, since it uses less digits than its factorization.

142405938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20500 (or 20491 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 142405938 is about 11933.3959123126. The cubic root of 142405938 is about 522.2070126214.

The spelling of 142405938 in words is "one hundred forty-two million, four hundred five thousand, nine hundred thirty-eight".