42488657 has 2 divisors, whose sum is σ = 42488658. Its totient is φ = 42488656.

The previous prime is 42488651. The next prime is 42488707. The reversal of 42488657 is 75688424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24840256 + 17648401 = 4984^2 + 4201^2 .

It is a cyclic number.

It is not a de Polignac number, because 42488657 - 2⁸ = 42488401 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42488651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21244328 + 21244329.

It is an arithmetic number, because the mean of its divisors is an integer number (21244329).

Almost surely, 2^42488657 is an apocalyptic number.

It is an amenable number.

42488657 is a deficient number, since it is larger than the sum of its proper divisors (1).

42488657 is an equidigital number, since it uses as much as digits as its factorization.

42488657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 430080, while the sum is 44.

The square root of 42488657 is about 6518.3323787607. The cubic root of 42488657 is about 348.9455529822.

The spelling of 42488657 in words is "forty-two million, four hundred eighty-eight thousand, six hundred fifty-seven".