42662761 has 4 divisors (see below), whose sum is σ = 42688852. Its totient is φ = 42636672.

The previous prime is 42662749. The next prime is 42662783. The reversal of 42662761 is 16726624.

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 24651225 + 18011536 = 4965^2 + 4244^2 .

It is a cyclic number.

It is not a de Polignac number, because 42662761 - 2²³ = 34274153 is a prime.

It is a super-2 number, since 2×42662761² = 3640222352286242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42662701) 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, 10416 + ... + 13921.

It is an arithmetic number, because the mean of its divisors is an integer number (10672213).

Almost surely, 2^42662761 is an apocalyptic number.

It is an amenable number.

42662761 is a deficient number, since it is larger than the sum of its proper divisors (26091).

42662761 is a wasteful number, since it uses less digits than its factorization.

42662761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26090.

The product of its digits is 24192, while the sum is 34.

The square root of 42662761 is about 6531.6736752535. The cubic root of 42662761 is about 349.4215233376.

The spelling of 42662761 in words is "forty-two million, six hundred sixty-two thousand, seven hundred sixty-one".