42649755 has 8 divisors (see below), whose sum is σ = 68239632. Its totient is φ = 22746528.

The previous prime is 42649729. The next prime is 42649757. The reversal of 42649755 is 55794624.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42649755 - 2⁵ = 42649723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42649757) 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, 1421644 + ... + 1421673.

It is an arithmetic number, because the mean of its divisors is an integer number (8529954).

Almost surely, 2^42649755 is an apocalyptic number.

42649755 is a deficient number, since it is larger than the sum of its proper divisors (25589877).

42649755 is a wasteful number, since it uses less digits than its factorization.

42649755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2843325.

The product of its digits is 302400, while the sum is 42.

The square root of 42649755 is about 6530.6779893056. The cubic root of 42649755 is about 349.3860119758.

The spelling of 42649755 in words is "forty-two million, six hundred forty-nine thousand, seven hundred fifty-five".