138535342 has 32 divisors (see below), whose sum is σ = 237385728. Its totient is φ = 60060000.

The previous prime is 138535339. The next prime is 138535343. The reversal of 138535342 is 243535831.

It is a junction number, because it is equal to n+sod(n) for n = 138535298 and 138535307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138535343) 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, 46992 + ... + 49852.

It is an arithmetic number, because the mean of its divisors is an integer number (7418304).

Almost surely, 2^138535342 is an apocalyptic number.

138535342 is a deficient number, since it is larger than the sum of its proper divisors (98850386).

138535342 is a wasteful number, since it uses less digits than its factorization.

138535342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2976.

The product of its digits is 43200, while the sum is 34.

The square root of 138535342 is about 11770.1037378606. The cubic root of 138535342 is about 517.4322899891.

The spelling of 138535342 in words is "one hundred thirty-eight million, five hundred thirty-five thousand, three hundred forty-two".