42649371 has 12 divisors (see below), whose sum is σ = 62215920. Its totient is φ = 28150800.

The previous prime is 42649367. The next prime is 42649381. The reversal of 42649371 is 17394624.

42649371 is a `hidden beast` number, since 4 + 2 + 649 + 3 + 7 + 1 = 666.

42649371 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42649371 - 2² = 42649367 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42649331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22551 + ... + 24368.

It is an arithmetic number, because the mean of its divisors is an integer number (5184660).

Almost surely, 2^42649371 is an apocalyptic number.

42649371 is a deficient number, since it is larger than the sum of its proper divisors (19566549).

42649371 is a wasteful number, since it uses less digits than its factorization.

42649371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47026 (or 47023 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 42649371 is about 6530.6485895353. The cubic root of 42649371 is about 349.3849633990.

The spelling of 42649371 in words is "forty-two million, six hundred forty-nine thousand, three hundred seventy-one".