42470749 has 4 divisors (see below), whose sum is σ = 42508800. Its totient is φ = 42432700.

The previous prime is 42470723. The next prime is 42470759. The reversal of 42470749 is 94707424.

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 42470749 - 2⁹ = 42470237 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 (42470759) 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 3 ways as a sum of consecutive naturals, for example, 17299 + ... + 19600.

It is an arithmetic number, because the mean of its divisors is an integer number (10627200).

Almost surely, 2^42470749 is an apocalyptic number.

It is an amenable number.

42470749 is a deficient number, since it is larger than the sum of its proper divisors (38051).

42470749 is a wasteful number, since it uses less digits than its factorization.

42470749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38050.

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 42470749 is about 6516.9585697624. The cubic root of 42470749 is about 348.8965218954.

The spelling of 42470749 in words is "forty-two million, four hundred seventy thousand, seven hundred forty-nine".