42733657 has 4 divisors (see below), whose sum is σ = 42762496. Its totient is φ = 42704820.

The previous prime is 42733651. The next prime is 42733667. The reversal of 42733657 is 75633724.

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 42733657 - 2¹⁹ = 42209369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42733651) 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, 12069 + ... + 15202.

It is an arithmetic number, because the mean of its divisors is an integer number (10690624).

Almost surely, 2^42733657 is an apocalyptic number.

It is an amenable number.

42733657 is a deficient number, since it is larger than the sum of its proper divisors (28839).

42733657 is a wasteful number, since it uses less digits than its factorization.

42733657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28838.

The product of its digits is 105840, while the sum is 37.

The square root of 42733657 is about 6537.0985153966. The cubic root of 42733657 is about 349.6149697861.

The spelling of 42733657 in words is "forty-two million, seven hundred thirty-three thousand, six hundred fifty-seven".