42352661 has 12 divisors (see below), whose sum is σ = 48455652. Its totient is φ = 36791808.

The previous prime is 42352613. The next prime is 42352663. The reversal of 42352661 is 16625324.

It can be written as a sum of positive squares in 6 ways, for example, as 37636 + 42315025 = 194^2 + 6505^2 .

It is not a de Polignac number, because 42352661 - 2¹⁰ = 42351637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42352663) 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, 1880 + ... + 9393.

It is an arithmetic number, because the mean of its divisors is an integer number (4037971).

Almost surely, 2^42352661 is an apocalyptic number.

It is an amenable number.

42352661 is a deficient number, since it is larger than the sum of its proper divisors (6102991).

42352661 is a wasteful number, since it uses less digits than its factorization.

42352661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11320 (or 11303 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 42352661 is about 6507.8922086955. The cubic root of 42352661 is about 348.5728580568.

Adding to 42352661 its reverse (16625324), we get a palindrome (58977985).

The spelling of 42352661 in words is "forty-two million, three hundred fifty-two thousand, six hundred sixty-one".