42412491 has 64 divisors (see below), whose sum is σ = 72737280. Its totient is φ = 24494400.

The previous prime is 42412481. The next prime is 42412499. The reversal of 42412491 is 19421424.

It is a happy number.

42412491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42412491 - 2⁹ = 42411979 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (42412499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 986316 + ... + 986358.

It is an arithmetic number, because the mean of its divisors is an integer number (1136520).

Almost surely, 2^42412491 is an apocalyptic number.

42412491 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

42412491 is a deficient number, since it is larger than the sum of its proper divisors (30324789).

42412491 is an equidigital number, since it uses as much as digits as its factorization.

42412491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 98 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 42412491 is about 6512.4873128475. The cubic root of 42412491 is about 348.7369193845.

The spelling of 42412491 in words is "forty-two million, four hundred twelve thousand, four hundred ninety-one".