42787051 has 4 divisors (see below), whose sum is σ = 42910000. Its totient is φ = 42664104.

The previous prime is 42787039. The next prime is 42787091. The reversal of 42787051 is 15078724.

It is a happy number.

42787051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42787051 - 2⁹ = 42786539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42786998 and 42787016.

It is not an unprimeable number, because it can be changed into a prime (42787091) 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 3 ways as a sum of consecutive naturals, for example, 60951 + ... + 61648.

It is an arithmetic number, because the mean of its divisors is an integer number (10727500).

Almost surely, 2^42787051 is an apocalyptic number.

42787051 is a deficient number, since it is larger than the sum of its proper divisors (122949).

42787051 is a wasteful number, since it uses less digits than its factorization.

42787051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122948.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 42787051 is about 6541.1811624507. The cubic root of 42787051 is about 349.7605191704.

It can be divided in two parts, 427 and 87051, that added together give a palindrome (87478).

The spelling of 42787051 in words is "forty-two million, seven hundred eighty-seven thousand, fifty-one".