42451371 has 24 divisors (see below), whose sum is σ = 64280944. Its totient is φ = 27993600.

The previous prime is 42451349. The next prime is 42451373. The reversal of 42451371 is 17315424.

42451371 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 42451371 - 2¹³ = 42443179 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42451373) 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 23 ways as a sum of consecutive naturals, for example, 22671 + ... + 24471.

Almost surely, 2^42451371 is an apocalyptic number.

42451371 is a deficient number, since it is larger than the sum of its proper divisors (21829573).

42451371 is an equidigital number, since it uses as much as digits as its factorization.

42451371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1913 (or 1901 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 42451371 is about 6515.4716636633. The cubic root of 42451371 is about 348.8434505032.

Adding to 42451371 its reverse (17315424), we get a palindrome (59766795).

The spelling of 42451371 in words is "forty-two million, four hundred fifty-one thousand, three hundred seventy-one".