42013657 has 8 divisors (see below), whose sum is σ = 48465216. Its totient is φ = 35674512.

The previous prime is 42013651. The next prime is 42013661. The reversal of 42013657 is 75631024.

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

It is a cyclic number.

It is not a de Polignac number, because 42013657 - 2⁷ = 42013529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42013651) 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 7 ways as a sum of consecutive naturals, for example, 27298 + ... + 28795.

It is an arithmetic number, because the mean of its divisors is an integer number (6058152).

Almost surely, 2^42013657 is an apocalyptic number.

It is an amenable number.

42013657 is a deficient number, since it is larger than the sum of its proper divisors (6451559).

42013657 is a wasteful number, since it uses less digits than its factorization.

42013657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56207.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 42013657 is about 6481.7942731932. The cubic root of 42013657 is about 347.6403366723.

The spelling of 42013657 in words is "forty-two million, thirteen thousand, six hundred fifty-seven".