42744687 has 8 divisors (see below), whose sum is σ = 57047040. Its totient is φ = 28469400.

The previous prime is 42744671. The next prime is 42744697. The reversal of 42744687 is 78644724.

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

It is not a de Polignac number, because 42744687 - 2⁴ = 42744671 is a prime.

It is a super-4 number, since 4×42744687⁴ (a number of 32 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42744607) 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, 2737 + ... + 9642.

It is an arithmetic number, because the mean of its divisors is an integer number (7130880).

Almost surely, 2^42744687 is an apocalyptic number.

42744687 is a deficient number, since it is larger than the sum of its proper divisors (14302353).

42744687 is a wasteful number, since it uses less digits than its factorization.

42744687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13533.

The product of its digits is 301056, while the sum is 42.

The square root of 42744687 is about 6537.9421074219. The cubic root of 42744687 is about 349.6450469482.

The spelling of 42744687 in words is "forty-two million, seven hundred forty-four thousand, six hundred eighty-seven".