42649338 has 16 divisors (see below), whose sum is σ = 89788320. Its totient is φ = 13468176.

The previous prime is 42649331. The next prime is 42649339. The reversal of 42649338 is 83394624.

It is a junction number, because it is equal to n+sod(n) for n = 42649296 and 42649305.

It is not an unprimeable number, because it can be changed into a prime (42649331) 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, 186945 + ... + 187172.

It is an arithmetic number, because the mean of its divisors is an integer number (5611770).

Almost surely, 2^42649338 is an apocalyptic number.

42649338 is an abundant number, since it is smaller than the sum of its proper divisors (47138982).

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

42649338 is a wasteful number, since it uses less digits than its factorization.

42649338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374141.

The product of its digits is 124416, while the sum is 39.

The square root of 42649338 is about 6530.6460629864. The cubic root of 42649338 is about 349.3848732866.

The spelling of 42649338 in words is "forty-two million, six hundred forty-nine thousand, three hundred thirty-eight".