42049742 has 16 divisors (see below), whose sum is σ = 73557600. Its totient is φ = 18021024.

The previous prime is 42049703. The next prime is 42049747. The reversal of 42049742 is 24794024.

It is a junction number, because it is equal to n+sod(n) for n = 42049699 and 42049708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42049747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29963 + ... + 31334.

It is an arithmetic number, because the mean of its divisors is an integer number (4597350).

Almost surely, 2^42049742 is an apocalyptic number.

42049742 is a deficient number, since it is larger than the sum of its proper divisors (31507858).

42049742 is an equidigital number, since it uses as much as digits as its factorization.

42049742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61320 (or 61306 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 42049742 is about 6484.5772414245. The cubic root of 42049742 is about 347.7398361580.

The spelling of 42049742 in words is "forty-two million, forty-nine thousand, seven hundred forty-two".