42603091 has 2 divisors, whose sum is σ = 42603092. Its totient is φ = 42603090.

The previous prime is 42603047. The next prime is 42603131. The reversal of 42603091 is 19030624.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42603091 - 2¹⁵ = 42570323 is a prime.

It is equal to p_2582017 and since 42603091 and 2582017 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (42603031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21301545 + 21301546.

It is an arithmetic number, because the mean of its divisors is an integer number (21301546).

Almost surely, 2^42603091 is an apocalyptic number.

42603091 is a deficient number, since it is larger than the sum of its proper divisors (1).

42603091 is an equidigital number, since it uses as much as digits as its factorization.

42603091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 42603091 is about 6527.1043350019. The cubic root of 42603091 is about 349.2585419308.

The spelling of 42603091 in words is "forty-two million, six hundred three thousand, ninety-one".