42409210 has 16 divisors (see below), whose sum is σ = 76530600. Its totient is φ = 16920576.

The previous prime is 42409187. The next prime is 42409219. The reversal of 42409210 is 1290424.

It can be written as a sum of positive squares in 4 ways, for example, as 32867289 + 9541921 = 5733^2 + 3089^2 .

It is not an unprimeable number, because it can be changed into a prime (42409219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1095 + ... + 9274.

Almost surely, 2^42409210 is an apocalyptic number.

42409210 is a deficient number, since it is larger than the sum of its proper divisors (34121390).

42409210 is a wasteful number, since it uses less digits than its factorization.

42409210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10785.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 42409210 is about 6512.2354072930. The cubic root of 42409210 is about 348.7279264730.

Adding to 42409210 its reverse (1290424), we get a palindrome (43699634).

The spelling of 42409210 in words is "forty-two million, four hundred nine thousand, two hundred ten".