42487851 has 12 divisors (see below), whose sum is σ = 65899752. Its totient is φ = 24278688.

The previous prime is 42487829. The next prime is 42487853. The reversal of 42487851 is 15878424.

It is a happy number.

It is not a de Polignac number, because 42487851 - 2⁶ = 42487787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42487853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 144370 + ... + 144663.

It is an arithmetic number, because the mean of its divisors is an integer number (5491646).

Almost surely, 2^42487851 is an apocalyptic number.

42487851 is a deficient number, since it is larger than the sum of its proper divisors (23411901).

42487851 is a wasteful number, since it uses less digits than its factorization.

42487851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289050 (or 289043 counting only the distinct ones).

The product of its digits is 71680, while the sum is 39.

The square root of 42487851 is about 6518.2705528384. The cubic root of 42487851 is about 348.9433464961.

The spelling of 42487851 in words is "forty-two million, four hundred eighty-seven thousand, eight hundred fifty-one".