42737749 has 4 divisors (see below), whose sum is σ = 44595936. Its totient is φ = 40879564.

The previous prime is 42737731. The next prime is 42737753. The reversal of 42737749 is 94773724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42737749 - 2¹⁷ = 42606677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42737719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 929059 + ... + 929104.

It is an arithmetic number, because the mean of its divisors is an integer number (11148984).

Almost surely, 2^42737749 is an apocalyptic number.

It is an amenable number.

42737749 is a deficient number, since it is larger than the sum of its proper divisors (1858187).

42737749 is a wasteful number, since it uses less digits than its factorization.

42737749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1858186.

The product of its digits is 296352, while the sum is 43.

The square root of 42737749 is about 6537.4114907966. The cubic root of 42737749 is about 349.6261286626.

The spelling of 42737749 in words is "forty-two million, seven hundred thirty-seven thousand, seven hundred forty-nine".