42744629 has 4 divisors (see below), whose sum is σ = 44123520. Its totient is φ = 41365740.

The previous prime is 42744607. The next prime is 42744641. The reversal of 42744629 is 92644724.

42744629 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-42744629 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42744592 and 42744601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42744329) 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 3 ways as a sum of consecutive naturals, for example, 689399 + ... + 689460.

It is an arithmetic number, because the mean of its divisors is an integer number (11030880).

Almost surely, 2^42744629 is an apocalyptic number.

It is an amenable number.

42744629 is a deficient number, since it is larger than the sum of its proper divisors (1378891).

42744629 is a wasteful number, since it uses less digits than its factorization.

42744629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378890.

The product of its digits is 96768, while the sum is 38.

The square root of 42744629 is about 6537.9376717739. The cubic root of 42744629 is about 349.6448888044.

The spelling of 42744629 in words is "forty-two million, seven hundred forty-four thousand, six hundred twenty-nine".