42749392 has 40 divisors (see below), whose sum is σ = 99646400. Its totient is φ = 17356032.

The previous prime is 42749363. The next prime is 42749401. The reversal of 42749392 is 29394724.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7917 + ... + 12172.

It is an arithmetic number, because the mean of its divisors is an integer number (2491160).

Almost surely, 2^42749392 is an apocalyptic number.

It is an amenable number.

42749392 is an abundant number, since it is smaller than the sum of its proper divisors (56897008).

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

42749392 is a wasteful number, since it uses less digits than its factorization.

42749392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20123 (or 20117 counting only the distinct ones).

The product of its digits is 108864, while the sum is 40.

The square root of 42749392 is about 6538.3019202236. The cubic root of 42749392 is about 349.6578752060.

The spelling of 42749392 in words is "forty-two million, seven hundred forty-nine thousand, three hundred ninety-two".