42089651 has 2 divisors, whose sum is σ = 42089652. Its totient is φ = 42089650.

The previous prime is 42089639. The next prime is 42089681. The reversal of 42089651 is 15698024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42089651 - 2¹⁸ = 41827507 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42089681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21044825 + 21044826.

It is an arithmetic number, because the mean of its divisors is an integer number (21044826).

Almost surely, 2^42089651 is an apocalyptic number.

42089651 is a deficient number, since it is larger than the sum of its proper divisors (1).

42089651 is an equidigital number, since it uses as much as digits as its factorization.

42089651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 42089651 is about 6487.6537361360. The cubic root of 42089651 is about 347.8498135348.

The spelling of 42089651 in words is "forty-two million, eighty-nine thousand, six hundred fifty-one".