42533657 has 2 divisors, whose sum is σ = 42533658. Its totient is φ = 42533656.

The previous prime is 42533641. The next prime is 42533681. The reversal of 42533657 is 75633524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42042256 + 491401 = 6484^2 + 701^2 .

It is a cyclic number.

It is not a de Polignac number, because 42533657 - 2⁴ = 42533641 is a prime.

It is a super-2 number, since 2×42533657² = 3618223955587298, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42533357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21266828 + 21266829.

It is an arithmetic number, because the mean of its divisors is an integer number (21266829).

Almost surely, 2^42533657 is an apocalyptic number.

It is an amenable number.

42533657 is a deficient number, since it is larger than the sum of its proper divisors (1).

42533657 is an equidigital number, since it uses as much as digits as its factorization.

42533657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 35.

The square root of 42533657 is about 6521.7832684014. The cubic root of 42533657 is about 349.0686996500.

The spelling of 42533657 in words is "forty-two million, five hundred thirty-three thousand, six hundred fifty-seven".