138429342 has 12 divisors (see below), whose sum is σ = 299930280. Its totient is φ = 46143108.

The previous prime is 138429337. The next prime is 138429359. The reversal of 138429342 is 243924831.

It is a junction number, because it is equal to n+sod(n) for n = 138429297 and 138429306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3845242 + ... + 3845277.

It is an arithmetic number, because the mean of its divisors is an integer number (24994190).

Almost surely, 2^138429342 is an apocalyptic number.

138429342 is an abundant number, since it is smaller than the sum of its proper divisors (161500938).

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

138429342 is a wasteful number, since it uses less digits than its factorization.

138429342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7690527 (or 7690524 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 138429342 is about 11765.5999422044. The cubic root of 138429342 is about 517.3002856047.

The spelling of 138429342 in words is "one hundred thirty-eight million, four hundred twenty-nine thousand, three hundred forty-two".