42285091 has 2 divisors, whose sum is σ = 42285092. Its totient is φ = 42285090.

The previous prime is 42285083. The next prime is 42285119. The reversal of 42285091 is 19058224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42285091 - 2³ = 42285083 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42285041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21142545 + 21142546.

It is an arithmetic number, because the mean of its divisors is an integer number (21142546).

Almost surely, 2^42285091 is an apocalyptic number.

42285091 is a deficient number, since it is larger than the sum of its proper divisors (1).

42285091 is an equidigital number, since it uses as much as digits as its factorization.

42285091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 42285091 is about 6502.6987474432. The cubic root of 42285091 is about 348.3873867924.

The spelling of 42285091 in words is "forty-two million, two hundred eighty-five thousand, ninety-one".