42206361 has 4 divisors (see below), whose sum is σ = 56275152. Its totient is φ = 28137572.

The previous prime is 42206347. The next prime is 42206363. The reversal of 42206361 is 16360224.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42206361 - 2¹⁰ = 42205337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42206363) 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, 7034391 + ... + 7034396.

It is an arithmetic number, because the mean of its divisors is an integer number (14068788).

Almost surely, 2^42206361 is an apocalyptic number.

It is an amenable number.

42206361 is a deficient number, since it is larger than the sum of its proper divisors (14068791).

42206361 is a wasteful number, since it uses less digits than its factorization.

42206361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14068790.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 42206361 is about 6496.6422865970. The cubic root of 42206361 is about 348.1710333143.

Adding to 42206361 its reverse (16360224), we get a palindrome (58566585).

It can be divided in two parts, 42 and 206361, that added together give a triangular number (206403 = T₆₄₂).

The spelling of 42206361 in words is "forty-two million, two hundred six thousand, three hundred sixty-one".