42770513 has 4 divisors (see below), whose sum is σ = 42787380. Its totient is φ = 42753648.

The previous prime is 42770491. The next prime is 42770527. The reversal of 42770513 is 31507724.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4231249 + 38539264 = 2057^2 + 6208^2 .

It is a cyclic number.

It is not a de Polignac number, because 42770513 - 2⁶ = 42770449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42770213) 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, 3770 + ... + 9987.

It is an arithmetic number, because the mean of its divisors is an integer number (10696845).

Almost surely, 2^42770513 is an apocalyptic number.

It is an amenable number.

42770513 is a deficient number, since it is larger than the sum of its proper divisors (16867).

42770513 is a wasteful number, since it uses less digits than its factorization.

42770513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16866.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 42770513 is about 6539.9168954965. The cubic root of 42770513 is about 349.7154503568.

The spelling of 42770513 in words is "forty-two million, seven hundred seventy thousand, five hundred thirteen".