42649101 has 12 divisors (see below), whose sum is σ = 67204800. Its totient is φ = 25847880.

The previous prime is 42649099. The next prime is 42649109. The reversal of 42649101 is 10194624.

42649101 is a `hidden beast` number, since 4 + 2 + 649 + 10 + 1 = 666.

It is not a de Polignac number, because 42649101 - 2¹ = 42649099 is a prime.

It is a super-2 number, since 2×42649101² = 3637891632216402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42649109) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 215301 + ... + 215498.

It is an arithmetic number, because the mean of its divisors is an integer number (5600400).

Almost surely, 2^42649101 is an apocalyptic number.

It is an amenable number.

42649101 is a deficient number, since it is larger than the sum of its proper divisors (24555699).

42649101 is a wasteful number, since it uses less digits than its factorization.

42649101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430816 (or 430813 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 42649101 is about 6530.6279177427. The cubic root of 42649101 is about 349.3842261147.

The spelling of 42649101 in words is "forty-two million, six hundred forty-nine thousand, one hundred one".