42487451 has 4 divisors (see below), whose sum is σ = 42999432. Its totient is φ = 41975472.

The previous prime is 42487441. The next prime is 42487513. The reversal of 42487451 is 15478424.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42487451 - 2¹⁰ = 42486427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42487411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255866 + ... + 256031.

It is an arithmetic number, because the mean of its divisors is an integer number (10749858).

Almost surely, 2^42487451 is an apocalyptic number.

42487451 is a deficient number, since it is larger than the sum of its proper divisors (511981).

42487451 is an equidigital number, since it uses as much as digits as its factorization.

42487451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511980.

The product of its digits is 35840, while the sum is 35.

The square root of 42487451 is about 6518.2398697808. The cubic root of 42487451 is about 348.9422514554.

The spelling of 42487451 in words is "forty-two million, four hundred eighty-seven thousand, four hundred fifty-one".