42138733 has 16 divisors (see below), whose sum is σ = 54915840. Its totient is φ = 31378176.

The previous prime is 42138689. The next prime is 42138781. The reversal of 42138733 is 33783124.

It is a cyclic number.

It is not a de Polignac number, because 42138733 - 2⁹ = 42138221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42138695 and 42138704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42138793) 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, 12073 + ... + 15166.

It is an arithmetic number, because the mean of its divisors is an integer number (3432240).

Almost surely, 2^42138733 is an apocalyptic number.

It is an amenable number.

42138733 is a deficient number, since it is larger than the sum of its proper divisors (12777107).

42138733 is a wasteful number, since it uses less digits than its factorization.

42138733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27276.

The product of its digits is 12096, while the sum is 31.

The square root of 42138733 is about 6491.4353574537. The cubic root of 42138733 is about 347.9849736983.

The spelling of 42138733 in words is "forty-two million, one hundred thirty-eight thousand, seven hundred thirty-three".